https://incubaid.wordpress.com/2012/01/24/number-of-trailing-zeroes/ https://incubaid.wordpress.com/2012/01/24/number-of-trailing... is part of the solution. t

https://incubaid.wordpress.com/2012/01/24/number-of-trailing-zeroes/ https://incubaid.wordpress.com/2012/01/24/number-of-trailing... is part of the solution. the other part is getting to the most significant digit.