rows = ['73167176531330624919225119674426574742355349194934','96983520312774506326239578318016984801869478851843','85861560789112949495459501737958331952853208805511',
        '12540698747158523863050715693290963295227443043557','66896648950445244523161731856403098711121722383113','62229893423380308135336276614282806444486645238749',
        '30358907296290491560440772390713810515859307960866','70172427121883998797908792274921901699720888093776','65727333001053367881220235421809751254540594752243',
        '52584907711670556013604839586446706324415722155397','53697817977846174064955149290862569321978468622482','83972241375657056057490261407972968652414535100474',
        '82166370484403199890008895243450658541227588666881','16427171479924442928230863465674813919123162824586','17866458359124566529476545682848912883142607690042',
        '24219022671055626321111109370544217506941658960408','07198403850962455444362981230987879927244284909188','84580156166097919133875499200524063689912560717606',
        '05886116467109405077541002256983155200055935729725','71636269561882670428252483600823257530420752963450',]

columns  = []

def createcolumns():

    global rows,columns

    for x in range(0,50):
        tempvalue = ''
        for j in range(0,20):
            tempvalue = tempvalue + rows[j][x]
        columns.append(tempvalue)

def multiply(string):
    tempvalue = 1
    for letters in string:
        tempvalue *= int(letters)
    return tempvalue


def highestnumber():

    global rows,columns

    highest = 0

    # 37 ways per row * 20 + 7 ways per collum * 50

    for x in range(0,20):
        for g in range(0,37):
            tempvalue = ''
            for j in range(0,13):
                tempvalue = tempvalue + rows[x][j+g]
            tempvalue = multiply(tempvalue)
            if(tempvalue > highest):
                highest = tempvalue

    for x in range(0,50):
        for g in range(0,7):
            tempvalue = ''
            for j in range(0,13):
                tempvalue = tempvalue + columns[x][j+g]
            tempvalue = multiply(tempvalue)
            if(tempvalue > highest):
                highest = tempvalue

    return highest

createcolumns()
print(highestnumber())

>> 56435097600