How do the values of the digit 5 differ in the number 75,575

They differ in their place values. Place values give a quantity of value of a certain digit in a number. Given a number, the rightmost number is the ones place, followed by the tens place, hundreds, thousands, ten thousands, hundred thousands, millions, ten millions, hundred millions, as so on and so forth. The place value of a certain digit is 10 times bigger than its adjacent digit to the right.

For the number 75,575, the place values for each number is starting from the right going to the left are:
5 - ones
7 - tens
5 - hundreds
5 - thousands
7 - ten thousands

So, the compare to the 5 in the thousands place, it is 1000 times bigger than the 5 in the ones place, and 10 times bigger than the 5 in the hundreds place.