BETTER money counter thing

-- so javascript is really fucking gay so I'm forced to make this money counter thing on Lua.
-- And if you're a fuckwit and want to argue saying I shouldn't of used JavaScript in the first place, how the hell did I know it's math was so
 -- retarded?  I only used Javascript because it's faster with math.  Anyways, on to the script.

money = "$977.47"

---don't change anything below here unless you're a nerd.
number = tonumber(string.sub(money,2))
hundred = 0
fifty = 0
twenty = 0
ten = 0
five = 0
one = 0

quarter = 0
dime = 0
nickel = 0
penny = 0

function deterdeci(x)
    x = tostring(x)
    local gar = false
    for i=1,#x do
        if string.sub(x,i,i) == "." and (string.sub(x,i+1,i+1) ~= "0" and string.sub(x,i+2,i+2) ~= "") then
            gar = true
            break
        end
    end
    return gar
end

function seperatedeci(x)
    x = tostring(x)
    for i=1,#x do
        if string.sub(x,i,i) == "." then
            local number = "0."..string.sub(x,i+1)
            return tonumber(number)
        end
    end
end

function removedeci(x)
    x = tostring(x)
    for i=1,#x do
        if string.sub(x,i,i) == "." then
            return tonumber(string.sub(x,1,i-1))
        end
    end
end

--calculate coins
if deterdeci(number) == true then
    local num = seperatedeci(number)*100
    while num ~= 0 do
        if num % 25 == 0 then
            quarter = quarter + 1
            num = num - 25
        elseif num % 10 == 0 then
            dime = dime + 1
            num = num - 10
        elseif num % 5 == 0 then
            nickel = nickel + 1
            num = num - 5
        else
            penny = penny + 1
            num = num - 1
        end
    end
    number = removedeci(number)
end

--calculate notes
while number ~= 0 do
    if number % 100 == 0 then
        hundred = hundred + 1
        number = number - 100
    elseif number % 50 == 0 then
        fifty = fifty + 1
        number = number - 50
    elseif number % 20 == 0 then
        twenty = twenty + 1
        number = number - 20
    elseif number % 10 == 0 then
        ten = ten + 1
        number = number - 10
    elseif number % 5 == 0 then
        five = five + 1
        number = number - 5
    else
        one = one + 1
        number = number - 1
    end
end

print("The Amount, "..money..", requires:\n\n"..hundred.." $100 notes;\n"..fifty.." $50 notes; \n"..twenty.." $20 notes; \n"..ten.." $10 notes; \n"..five.." $5 notes; \n"..one.." $1 notes; \n"..quarter.." quarters; \n"..dime.." dimes; \n"..nickel.." nickels; \nand "..penny.." pennies.")