6300 and 530,
3 and 2 underlined
compare value
the value 3 is

Basically when reading the value of a digit we start from the right.
Digits from the right to the left are named as follows:
units>no zeros/digits after them
tens> 1 zero/digit after the digit
hundreds> 2 zeros/digits after the digit
thousands> 3 zeros/digits after the digit
ten thousands> 4 zeros/digits after the digit
hundred thousands> 5 zeros/digits after the digit
million> 6 zeros/digits after the digit

Applying this on the above mentioned numbers, we will find that the 3 represents the hundreds (300) in 6300 while it represent the tens (30) in 530.

The question is to find the difference between the two, which means we will subtract them:
difference = 300 - 30 = 270

The value 3 in 6300 is 270 times the value of 3 in 530