Solution - Long subtraction
Step-by-step explanation
1. Rewrite the numbers from top to bottom, aligned by their place values
| Place value | ten thousands | thousands | hundreds | tens | ones |
| 7 | 8 | 2 | 0 | 0 | |
| - | 1 | 9 | 4 | 0 | 0 |
2. Subtract the numbers using long subtraction method
Subtract the numbers in the ones column from the top number:
0-0=0
| Place value | ten thousands | thousands | hundreds | tens | ones |
| 7 | 8 | 2 | 0 | 0 | |
| - | 1 | 9 | 4 | 0 | 0 |
| 0 |
Subtract the numbers in the tens column from the top number:
0-0=0
| Place value | ten thousands | thousands | hundreds | tens | ones |
| 7 | 8 | 2 | 0 | 0 | |
| - | 1 | 9 | 4 | 0 | 0 |
| 0 | 0 |
Because the upper digit (2) in the hundreds column is too small to get a positive difference, borrow 1 from the digit (8) in the next number place which becomes (7) and get (12).
| Place value | ten thousands | thousands | hundreds | tens | ones |
| 7 | 12 | ||||
| 7 | 8 | 2 | 0 | 0 | |
| - | 1 | 9 | 4 | 0 | 0 |
| 0 | 0 |
Subtract the numbers in the hundreds column from the top number:
12-4=8
| Place value | ten thousands | thousands | hundreds | tens | ones |
| 7 | 12 | ||||
| 7 | 8 | 2 | 0 | 0 | |
| - | 1 | 9 | 4 | 0 | 0 |
| 8 | 0 | 0 |
Because the upper digit (7) in the thousands column is too small to get a positive difference, borrow 1 from the digit (7) in the next number place which becomes (6) and get (17).
| Place value | ten thousands | thousands | hundreds | tens | ones |
| 6 | 17 | ||||
| 7 | 12 | ||||
| 7 | 8 | 2 | 0 | 0 | |
| - | 1 | 9 | 4 | 0 | 0 |
| 8 | 0 | 0 |
Subtract the numbers in the thousands column from the top number:
17-9=8
| Place value | ten thousands | thousands | hundreds | tens | ones |
| 6 | 17 | ||||
| 7 | 12 | ||||
| 7 | 8 | 2 | 0 | 0 | |
| - | 1 | 9 | 4 | 0 | 0 |
| 8 | 8 | 0 | 0 |
Subtract the numbers in the ten thousands column from the top number:
6-1=5
| Place value | ten thousands | thousands | hundreds | tens | ones |
| 6 | 17 | ||||
| 7 | 12 | ||||
| 7 | 8 | 2 | 0 | 0 | |
| - | 1 | 9 | 4 | 0 | 0 |
| 5 | 8 | 8 | 0 | 0 |
The solution is: 58,800
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