Let's divide 79198881 by 642
We want to divide 79198881 by 642.

Step 1:
642 can be fit into 7 0 times, resulting in a remainder of 7.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 7, we end up with 7.
Take the next digit (9) from the dividend and append it to 7, then repeat: 79 / 642

On to step 2:
79 divided by 642 is 0 with a remainder of 79.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 79 and we're left with 79.
Bring next digit (1) of the dividend behind the 79 and repeat the process: 791 / 642

Let's proceed to step 3:
If we divide 791 by 642, we get 1 and a remainder of 149.
Write down 1 as next digit of the result. 
Result so far: 1.0
Subtract 642 from 791 to get 149.
Include the next digit (9) from the dividend after 149, then repeat: 1499 / 642

Moving on to step 4:
When dividing 1499 by 642, we get 2 with a remainder of 215.
Use 2 as the next digit of our solution. 
Result so far: 12.0
Deduct 1284 from 1499 and we're left with 215.
Include the next digit (8) from the dividend after 215, then repeat: 2158 / 642

Advancing to step 5:
642 goes into 2158 3 times with a remainder of 232.
Use 3 as the next digit of our solution. 
Result so far: 123.0
If we subtract 1926 from 2158, we get 232.
Bring next digit (8) of the dividend behind the 232 and repeat the process: 2328 / 642

Going ahead to step 6:
642 goes into 2328 3 times with a remainder of 402.
The next digit of our result is 3. 
Result so far: 1233.0
If we subtract 1926 from 2328, we get 402.
Append the next digit (8) from the dividend to 402 and continue with: 4028 / 642

Moving on to step 7:
642 can be fit into 4028 6 times, resulting in a remainder of 176.
Write down 6 as next digit of the result. 
Result so far: 12336.0
Subtracting 3852 from 4028 leaves us with 176.
Bring next digit (1) of the dividend behind the 176 and repeat the process: 1761 / 642

Moving on to step 8:
1761 divided by 642 is 2 with a remainder of 477.
The number 2 becomes the next digit in our result. 
Result so far: 123362.0
Deduct 1284 from 1761 and we're left with 477.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4770, and continue the process.

Moving on to step 9:
642 goes into 4770 7 times with a remainder of 276.
Write down 7 as next digit of the result. 
Result so far: 123362.7
The remainder is 276 after subtracting 4494 from 4770.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2760, and continue the process.

Moving on to step 10:
2760 divided by 642 is 4 with a remainder of 192.
Put 4 as the next digit of the answer. 
Result so far: 123362.74
Subtract 2568 from 2760 to get 192.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1920, and continue the process.

Going ahead to step 11:
1920 divided by 642 is 2 with a remainder of 636.
Write down 2 as next digit of the result. 
Result so far: 123362.742
Subtracting 1284 from 1920 leaves us with 636.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6360, and continue the process.

Step 12:
642 goes into 6360 9 times with a remainder of 582.
Record the quotient 9 as the next digit in the result. 
Result so far: 123362.7429
The remainder is 582 after subtracting 5778 from 6360.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5820, and continue the process.

Let's proceed to step 13:
If we divide 5820 by 642, we get 9 and a remainder of 42.
Record the quotient 9 as the next digit in the result. 
Result so far: 123362.74299
If we subtract 5778 from 5820, we get 42.
Since there are no more digits in the dividend, we add a zero to the remainder making it 420, and continue the process.

Our division results in 123362.74299 with a remaining 4.2e-05.