Compare the values of the underlined digits. 503497 and 26475. The underlined is 7

The 7 is 10 times bigger in 26475 than the 7 in 503497. why? because the 7 in 26475 is in the 10's place and the 7 in 503497 is in the ones place.

If you need clarification on the 10 times bigger part ... consider this whats 1*10? 10

. If the 7 was in the 100 place and the other 7 was in the 10 place then it would be 10*10=100 and so on