Let's divide 79386631 by 309
Our goal is to divide 79386631 by 309.

Going ahead to step 1:
309 can be fit into 7 0 times, resulting in a remainder of 7.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 7 leaves us with 7.
Bring next digit (9) of the dividend behind the 7 and repeat the process: 79 / 309

Advancing to step 2:
When dividing 79 by 309, we get 0 with a remainder of 79.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 79 leaves us with 79.
Include the next digit (3) from the dividend after 79, then repeat: 793 / 309

Let's proceed to step 3:
When dividing 793 by 309, we get 2 with a remainder of 175.
Write down 2 as next digit of the result. 
Result so far: 2.0
If we subtract 618 from 793, we get 175.
Grab the next digit (8) from the dividend, add it to 175, then carry on: 1758 / 309

Advancing to step 4:
When dividing 1758 by 309, we get 5 with a remainder of 213.
Put 5 as the next digit of the answer. 
Result so far: 25.0
Deduct 1545 from 1758 and we're left with 213.
Fetch the next digit (6) from the dividend, attach it to 213 and continue: 2136 / 309

On to step 5:
The number 309 fits into 2136 6 times, leaving a remainder of 282.
Record the quotient 6 as the next digit in the result. 
Result so far: 256.0
Deduct 1854 from 2136 and we're left with 282.
Include the next digit (6) from the dividend after 282, then repeat: 2826 / 309

Step 6:
If we divide 2826 by 309, we get 9 and a remainder of 45.
Write down 9 as next digit of the result. 
Result so far: 2569.0
If we subtract 2781 from 2826, we get 45.
Grab the next digit (3) from the dividend, add it to 45, then carry on: 453 / 309

Going ahead to step 7:
309 goes into 453 1 times with a remainder of 144.
The next digit of our result is 1. 
Result so far: 25691.0
The remainder is 144 after subtracting 309 from 453.
Grab the next digit (1) from the dividend, add it to 144, then carry on: 1441 / 309

Step 8:
When dividing 1441 by 309, we get 4 with a remainder of 205.
Write down 4 as next digit of the result. 
Result so far: 256914.0
If we subtract 1236 from 1441, we get 205.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2050, and continue the process.

Step 9:
When dividing 2050 by 309, we get 6 with a remainder of 196.
Record the quotient 6 as the next digit in the result. 
Result so far: 256914.6
Subtract 1854 from 2050 to get 196.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1960, and continue the process.

On to step 10:
When dividing 1960 by 309, we get 6 with a remainder of 106.
Put 6 as the next digit of the answer. 
Result so far: 256914.66
If we take 1854 away from 1960, we end up with 106.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1060, and continue the process.

After the division, we end up with 256914.66 and a remainder of 0.106.