We have 1575 voters, out of which 40% are male and 60% are female. First we want to calculate exactly how many male and female voters there are.

To calculate 40% of 1575 we will simply take 10% (which is 157.5) and multiply it by 4:

so we have 630 male voters and 945 female voters. Now, use the same way to calculate 60% of 630, 40% of 945 and add them together to get the final result.