Let's divide 20991566 by 935
We're looking to find how many times 935 goes into 20991566.

On to step 1:
935 can be fit into 2 0 times, resulting in a remainder of 2.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 2 after subtracting 0 from 2.
Append the next digit (0) from the dividend to 2 and continue with: 20 / 935

Advancing to step 2:
If we divide 20 by 935, we get 0 and a remainder of 20.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 20 leaves us with 20.
Bring next digit (9) of the dividend behind the 20 and repeat the process: 209 / 935

Moving on to step 3:
209 divided by 935 is 0 with a remainder of 209.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 209 after subtracting 0 from 209.
Grab the next digit (9) from the dividend, add it to 209, then carry on: 2099 / 935

Going ahead to step 4:
The number 935 fits into 2099 2 times, leaving a remainder of 229.
Put 2 as the next digit of the answer. 
Result so far: 2.0
Subtracting 1870 from 2099 leaves us with 229.
Include the next digit (1) from the dividend after 229, then repeat: 2291 / 935

Going ahead to step 5:
The number 935 fits into 2291 2 times, leaving a remainder of 421.
Record the quotient 2 as the next digit in the result. 
Result so far: 22.0
Deduct 1870 from 2291 and we're left with 421.
Append the next digit (5) from the dividend to 421 and continue with: 4215 / 935

Advancing to step 6:
935 goes into 4215 4 times with a remainder of 475.
Use 4 as the next digit of our solution. 
Result so far: 224.0
Deduct 3740 from 4215 and we're left with 475.
Take the next digit (6) from the dividend and append it to 475, then repeat: 4756 / 935

Advancing to step 7:
The number 935 fits into 4756 5 times, leaving a remainder of 81.
The number 5 becomes the next digit in our result. 
Result so far: 2245.0
Subtract 4675 from 4756 to get 81.
Include the next digit (6) from the dividend after 81, then repeat: 816 / 935

Moving on to step 8:
The number 935 fits into 816 0 times, leaving a remainder of 816.
Record the quotient 0 as the next digit in the result. 
Result so far: 22450.0
Deduct 0 from 816 and we're left with 816.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8160, and continue the process.

Step 9:
935 goes into 8160 8 times with a remainder of 680.
Record the quotient 8 as the next digit in the result. 
Result so far: 22450.8
If we subtract 7480 from 8160, we get 680.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6800, and continue the process.

Let's proceed to step 10:
If we divide 6800 by 935, we get 7 and a remainder of 255.
Record the quotient 7 as the next digit in the result. 
Result so far: 22450.87
The remainder is 255 after subtracting 6545 from 6800.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2550, and continue the process.

Step 11:
935 goes into 2550 2 times with a remainder of 680.
The number 2 becomes the next digit in our result. 
Result so far: 22450.872
Subtracting 1870 from 2550 leaves us with 680.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6800, and continue the process.

Let's proceed to step 12:
When dividing 6800 by 935, we get 7 with a remainder of 255.
Put 7 as the next digit of the answer. 
Result so far: 22450.8727
The remainder is 255 after subtracting 6545 from 6800.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2550, and continue the process.

On to step 13:
935 can be fit into 2550 2 times, resulting in a remainder of 680.
Write down 2 as next digit of the result. 
Result so far: 22450.87272
If we subtract 1870 from 2550, we get 680.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6800, and continue the process.

Advancing to step 14:
If we divide 6800 by 935, we get 7 and a remainder of 255.
Put 7 as the next digit of the answer. 
Result so far: 22450.872727
If we take 6545 away from 6800, we end up with 255.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2550, and continue the process.

Going ahead to step 15:
935 goes into 2550 2 times with a remainder of 680.
The next digit of our result is 2. 
Result so far: 22450.8727272
Deduct 1870 from 2550 and we're left with 680.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6800, and continue the process.

Advancing to step 16:
935 goes into 6800 7 times with a remainder of 255.
Put 7 as the next digit of the answer. 
Result so far: 22450.87272727
The remainder is 255 after subtracting 6545 from 6800.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2550, and continue the process.

The final outcome is 22450.87272727, with a leftover of 2.55e-07.