in above explanation why did we divide 57.6 with 0.95. And where did 0.95 came from

Without the specific context of the problem, it's a bit difficult to provide an exact answer. However, generally, dividing by 0.95 is equivalent to finding 95% of a certain value.

If we're dividing 57.6 by 0.95, it could be that we're trying to find the original value before a 5% reduction was applied. The 0.95 could have come from subtracting a 5% (or 0.05) reduction from 1 (as in 1 - 0.05 = 0.95).

Here's a step-by-step breakdown:

1. Let's say we have an original value that was reduced by 5% to give us 57.6. We don't know this original value yet.

2. To find this original value, we can reverse the 5% reduction. We do this by dividing 57.6 by 0.95 (which represents the 95% remaining after the 5% reduction).

3. The result of this division gives us the original value before the 5% reduction was applied.

Again, this is a general explanation. The specifics might vary depending on the context of your problem.