Let's divide 39219865 by 91
We want to divide 39219865 by 91.

Going ahead to step 1:
91 goes into 3 0 times with a remainder of 3.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 3 after subtracting 0 from 3.
Bring next digit (9) of the dividend behind the 3 and repeat the process: 39 / 91

Advancing to step 2:
The number 91 fits into 39 0 times, leaving a remainder of 39.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 39 and we're left with 39.
Include the next digit (2) from the dividend after 39, then repeat: 392 / 91

Let's proceed to step 3:
The number 91 fits into 392 4 times, leaving a remainder of 28.
Write down 4 as next digit of the result. 
Result so far: 4.0
Subtract 364 from 392 to get 28.
Append the next digit (1) from the dividend to 28 and continue with: 281 / 91

Let's proceed to step 4:
91 can be fit into 281 3 times, resulting in a remainder of 8.
Use 3 as the next digit of our solution. 
Result so far: 43.0
Subtract 273 from 281 to get 8.
Take the next digit (9) from the dividend and append it to 8, then repeat: 89 / 91

Advancing to step 5:
91 can be fit into 89 0 times, resulting in a remainder of 89.
Use 0 as the next digit of our solution. 
Result so far: 430.0
Subtracting 0 from 89 leaves us with 89.
Fetch the next digit (8) from the dividend, attach it to 89 and continue: 898 / 91

Advancing to step 6:
91 can be fit into 898 9 times, resulting in a remainder of 79.
The next digit of our result is 9. 
Result so far: 4309.0
Subtract 819 from 898 to get 79.
Include the next digit (6) from the dividend after 79, then repeat: 796 / 91

On to step 7:
91 can be fit into 796 8 times, resulting in a remainder of 68.
The number 8 becomes the next digit in our result. 
Result so far: 43098.0
Deduct 728 from 796 and we're left with 68.
Include the next digit (5) from the dividend after 68, then repeat: 685 / 91

Step 8:
If we divide 685 by 91, we get 7 and a remainder of 48.
Record the quotient 7 as the next digit in the result. 
Result so far: 430987.0
Subtracting 637 from 685 leaves us with 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

Going ahead to step 9:
480 divided by 91 is 5 with a remainder of 25.
The next digit of our result is 5. 
Result so far: 430987.5
If we subtract 455 from 480, we get 25.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

On to step 10:
When dividing 250 by 91, we get 2 with a remainder of 68.
The next digit of our result is 2. 
Result so far: 430987.52
Subtracting 182 from 250 leaves us with 68.
Since there are no more digits in the dividend, we add a zero to the remainder making it 680, and continue the process.

Moving on to step 11:
91 can be fit into 680 7 times, resulting in a remainder of 43.
The number 7 becomes the next digit in our result. 
Result so far: 430987.527
If we take 637 away from 680, we end up with 43.
Since there are no more digits in the dividend, we add a zero to the remainder making it 430, and continue the process.

On to step 12:
91 can be fit into 430 4 times, resulting in a remainder of 66.
Use 4 as the next digit of our solution. 
Result so far: 430987.5274
The remainder is 66 after subtracting 364 from 430.
Since there are no more digits in the dividend, we add a zero to the remainder making it 660, and continue the process.

On to step 13:
If we divide 660 by 91, we get 7 and a remainder of 23.
Put 7 as the next digit of the answer. 
Result so far: 430987.52747
Subtracting 637 from 660 leaves us with 23.
Since there are no more digits in the dividend, we add a zero to the remainder making it 230, and continue the process.

On to step 14:
When dividing 230 by 91, we get 2 with a remainder of 48.
The next digit of our result is 2. 
Result so far: 430987.527472
If we subtract 182 from 230, we get 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

Moving on to step 15:
91 can be fit into 480 5 times, resulting in a remainder of 25.
Use 5 as the next digit of our solution. 
Result so far: 430987.5274725
Subtracting 455 from 480 leaves us with 25.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

On to step 16:
91 can be fit into 250 2 times, resulting in a remainder of 68.
Use 2 as the next digit of our solution. 
Result so far: 430987.52747252
Subtracting 182 from 250 leaves us with 68.
Since there are no more digits in the dividend, we add a zero to the remainder making it 680, and continue the process.

The final result is 430987.52747252 with a remainder of 6.8e-08.