keep getting this error message when submitting, compiles fine, but marking software says its incorrect

we're meant to be making a moving bike, everything compiles but we keep getting this error message:

% java Main
== Benchmark program's output ==                     |  == Your program's output ==

The starting position of the bike is 0          |   0.0
Pedalling three times...                         |  471.23889803846896
The final position of the bike is 471                    <


The first line of output that diff开发者_如何学Cers is shown below:

< The starting position of the bike is 0
---
> 0.0

Read the instructions you're given more closely. You are expected to produce very specific output, and you're not doing that.

It looks like you are supposed to be formatting your output as integers (possibly with rounding, but check your assignment specs). Instead you are printing floating point output.

Those numbers don't look quite the same to me.. I wonder what could cause that. (hint hint)