2520 is the smallest number that can be divided by each of the numbers from 1 to 10 without any remainder.

What is the smallest number that is evenly divisible by all of the numbers from 1 to 20?

My solution in Ruby:

```
def has_remainder?(var)
1.upto(20) { |i| return true if var % i != 0 }
false
end
number = 0
loop do
number += 1
break if !has_remainder?(number)
end
puts number
```