Question

I have a some numbers stored in the database.

>> t = Total.first
=> #<Total id: 1, profit: 1058, number: 17, fees: 204, created_at: "2012-01-12 06:44:30", updated_at: "2012-01-12 06:51:13">

I want to perform division on one of the integers (an integer that will be updated frequently) and have the division on the newly updated integer. I basically just want to know what percent the profit is of 26,000

>> t.profit
=> 1058
>> t.profit / 26000
=> 0
>> t.profit.to_i / 26000
=> 0

I was hoping it would be as easy as something like this

def index  
  @t = Total.first
  @x = @t.profit / 26000
end

View

<%= @x %>

but it’s not working, as the console suggested it wouldn’t. Any hints?

Answer 1

It’s an integer division, so the result is rounded. Convert one of your operands to float.

t.profit / 26000.to_f

To round that to two decimal places use something like this:

"%.2f" % (t.profit / 26000.to_f)