import traceback
def math_eval(expression):
    for j in range(len(expression)):
        if expression[j]=="-":
            if j>0:
                if expression[j-1] in "0123456789)":
                    expression = expression[:j]+"~"+expression[j+1:]
    operators = "^*/+~"
    operator_groups = ["^", "*/", "+~"]
    expression = expression.replace(" ","")
    expression = expression.replace(",","")
    for num in "0123456789":
        expression = expression.replace(num+"(","%s*("%num)
        expression = expression.replace(")"+num,")*%s"%num)
    expression = expression.replace(")(",")*(")
    while "(" in expression:
        start = expression.find("(")
        par_count = 0
        end = 0
        for i in range(start, len(expression)):
            if expression[i]=="(":
                par_count+=1
            elif expression[i]==")":
                par_count-=1
            if par_count==0:
                end = i
                break
        else:
            raise SyntaxError
        expression = expression.replace(expression[start:end+1], math_eval(expression[start+1:end]))
    for oper_group in operator_groups:
        while True:
            for j in range(len(expression)):
                if expression[j]=="-":
                    if j>0:
                        if expression[j-1] in "0123456789)":
                            expression = expression[:j]+"~"+expression[j+1:]

            for i in range(len(expression)):
                if expression[i] in oper_group:
                    oper = expression[i]
                    oper_i = i
                    break
            else:
                break
            oper_i = expression.find(oper)
            for i in range(oper_i-1, -1, -1):
                if expression[i] in operators:
                    a = expression[i+1:oper_i]
                    break
            else:
                a = expression[:oper_i]
            for i in range(oper_i+1, len(expression)):
                if expression[i] in operators:
                    b = expression[oper_i+1:i]
                    break
            else:
                b = expression[oper_i+1:]
            if oper=="^":
                expression = expression.replace(a+oper+b, "%.66f"%(float(a)**float(b)))
            elif oper=="*":
                expression = expression.replace(a+oper+b, "%.66f"%(float(a)*float(b)))
            elif oper=="/":
                assert b==0
                expression = expression.replace(a+oper+b, "%.66f"%(float(a)/float(b)))
            elif oper=="+":
                expression = expression.replace(a+oper+b, "%.66f"%(float(a)+float(b)))
            elif oper=="~":
                expression = expression.replace(a+oper+b, "%.66f"%(float(a)-float(b)))
    return "%s"%float(expression)
while 1:
    try:
        print float(math_eval(raw_input()))
    except AssertionError:
        print "Divide by 0"
    except:
        traceback.print_exc()