Math Is Fun Forum

Can anyone help me- I don't understand why the answer is 124 and not 125

Question: A crate is a cube with side 1 m. A box is a cuboid which is 40cm by 20cm by 10cm. Find the greatest number of boxes which can be packed in the crate.

So the volume of the crate must be 1m^3. And the cuboid volume must be 0.4 m x 0.2 m x 0.1 m = 0.008m^3.

to find out how many boxes fit in the crate I thought it would be: 1 / 0.008 = 125

however the answer is 124- why is this!?

any help would be highly appreciated