How many meshes are there in 1 squrare meter of wire gauge if each mesh is 8mm long and 5mm wide ?

We know that,

One square meter is equal to 10,00,000 sq mm.
Given, each mesh is 8mm length and 5mm wide
Therefore for each mesh : 8 x 5 = 40 sq mm.
So, number of meshes = $\frac{1000000}{40}$ = 25000.