Solution - Long subtraction

Subtract the numbers in the ones column from the top number:
0-0=0

Because the upper digit (0) in the tens column is too small to get a positive difference, borrow 1 from the digit (3) in the next number place which becomes (2) and get (10).

Subtract the numbers in the tens column from the top number:
10-2=8

Because the upper digit (2) in the hundreds column is too small to get a positive difference, borrow 1 from the number to the left (400) which becomes (399) and get (12).

Subtract the numbers in the hundreds column from the top number:
12-8=4

Subtract the numbers in the thousands column from the top number:
9-0=9

Subtract the numbers in the ten thousands column from the top number:
9-2=7

Write 3 in the hundred thousands place.

The solution is: 379,480