21086788 divided by 122 
We're looking to find how many times 122 goes into 21086788.

Step 1:
If we divide 2 by 122, we get 0 and a remainder of 2.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 2 to get 2.
Grab the next digit (1) from the dividend, add it to 2, then carry on: 21 / 122

Advancing to step 2:
21 divided by 122 is 0 with a remainder of 21.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 21 and we're left with 21.
Bring next digit (0) of the dividend behind the 21 and repeat the process: 210 / 122

Step 3:
When dividing 210 by 122, we get 1 with a remainder of 88.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
Subtracting 122 from 210 leaves us with 88.
Grab the next digit (8) from the dividend, add it to 88, then carry on: 888 / 122

Going ahead to step 4:
When dividing 888 by 122, we get 7 with a remainder of 34.
Record the quotient 7 as the next digit in the result. 
Result so far: 17.0
The remainder is 34 after subtracting 854 from 888.
Append the next digit (6) from the dividend to 34 and continue with: 346 / 122

Step 5:
346 divided by 122 is 2 with a remainder of 102.
Write down 2 as next digit of the result. 
Result so far: 172.0
Subtracting 244 from 346 leaves us with 102.
Include the next digit (7) from the dividend after 102, then repeat: 1027 / 122

Going ahead to step 6:
When dividing 1027 by 122, we get 8 with a remainder of 51.
Put 8 as the next digit of the answer. 
Result so far: 1728.0
Subtracting 976 from 1027 leaves us with 51.
Bring next digit (8) of the dividend behind the 51 and repeat the process: 518 / 122

Moving on to step 7:
518 divided by 122 is 4 with a remainder of 30.
Write down 4 as next digit of the result. 
Result so far: 17284.0
Subtracting 488 from 518 leaves us with 30.
Fetch the next digit (8) from the dividend, attach it to 30 and continue: 308 / 122

Moving on to step 8:
The number 122 fits into 308 2 times, leaving a remainder of 64.
Write down 2 as next digit of the result. 
Result so far: 172842.0
Subtracting 244 from 308 leaves us with 64.
Since there are no more digits in the dividend, we add a zero to the remainder making it 640, and continue the process.

Step 9:
If we divide 640 by 122, we get 5 and a remainder of 30.
Put 5 as the next digit of the answer. 
Result so far: 172842.5
If we subtract 610 from 640, we get 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Advancing to step 10:
When dividing 300 by 122, we get 2 with a remainder of 56.
The number 2 becomes the next digit in our result. 
Result so far: 172842.52
Deduct 244 from 300 and we're left with 56.
Since there are no more digits in the dividend, we add a zero to the remainder making it 560, and continue the process.

Going ahead to step 11:
If we divide 560 by 122, we get 4 and a remainder of 72.
Record the quotient 4 as the next digit in the result. 
Result so far: 172842.524
If we subtract 488 from 560, we get 72.
Since there are no more digits in the dividend, we add a zero to the remainder making it 720, and continue the process.

Going ahead to step 12:
122 goes into 720 5 times with a remainder of 110.
Put 5 as the next digit of the answer. 
Result so far: 172842.5245
Subtract 610 from 720 to get 110.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1100, and continue the process.

Advancing to step 13:
1100 divided by 122 is 9 with a remainder of 2.
The number 9 becomes the next digit in our result. 
Result so far: 172842.52459
Subtract 1098 from 1100 to get 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Moving on to step 14:
122 goes into 20 0 times with a remainder of 20.
Use 0 as the next digit of our solution. 
Result so far: 172842.52459
If we take 0 away from 20, we end up with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Step 15:
122 goes into 200 1 times with a remainder of 78.
The next digit of our result is 1. 
Result so far: 172842.5245901
If we take 122 away from 200, we end up with 78.
Since there are no more digits in the dividend, we add a zero to the remainder making it 780, and continue the process.

Advancing to step 16:
When dividing 780 by 122, we get 6 with a remainder of 48.
Write down 6 as next digit of the result. 
Result so far: 172842.52459016
Deduct 732 from 780 and we're left 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.

The final result is 172842.52459016 with a remainder of 4.8e-08.