We're dividing 21559516 by 106 
We want to figure out the number of times 21559516 can be divided by 106.

On to step 1:
2 divided by 106 is 0 with a remainder of 2.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 2, we get 2.
Include the next digit (1) from the dividend after 2, then repeat: 21 / 106

Let's proceed to step 2:
106 goes into 21 0 times with a remainder of 21.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 21, we end up with 21.
Append the next digit (5) from the dividend to 21 and continue with: 215 / 106

Going ahead to step 3:
When dividing 215 by 106, we get 2 with a remainder of 3.
Use 2 as the next digit of our solution. 
Result so far: 2.0
The remainder is 3 after subtracting 212 from 215.
Grab the next digit (5) from the dividend, add it to 3, then carry on: 35 / 106

Step 4:
When dividing 35 by 106, we get 0 with a remainder of 35.
Use 0 as the next digit of our solution. 
Result so far: 20.0
The remainder is 35 after subtracting 0 from 35.
Include the next digit (9) from the dividend after 35, then repeat: 359 / 106

On to step 5:
359 divided by 106 is 3 with a remainder of 41.
The number 3 becomes the next digit in our result. 
Result so far: 203.0
If we subtract 318 from 359, we get 41.
Include the next digit (5) from the dividend after 41, then repeat: 415 / 106

Step 6:
415 divided by 106 is 3 with a remainder of 97.
Record the quotient 3 as the next digit in the result. 
Result so far: 2033.0
If we take 318 away from 415, we end up with 97.
Bring next digit (1) of the dividend behind the 97 and repeat the process: 971 / 106

Let's proceed to step 7:
106 can be fit into 971 9 times, resulting in a remainder of 17.
Record the quotient 9 as the next digit in the result. 
Result so far: 20339.0
The remainder is 17 after subtracting 954 from 971.
Take the next digit (6) from the dividend and append it to 17, then repeat: 176 / 106

Advancing to step 8:
The number 106 fits into 176 1 times, leaving a remainder of 70.
Write down 1 as next digit of the result. 
Result so far: 203391.0
If we subtract 106 from 176, we get 70.
Since there are no more digits in the dividend, we add a zero to the remainder making it 700, and continue the process.

Advancing to step 9:
If we divide 700 by 106, we get 6 and a remainder of 64.
Record the quotient 6 as the next digit in the result. 
Result so far: 203391.6
Subtracting 636 from 700 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 10:
When dividing 640 by 106, we get 6 with a remainder of 4.
The number 6 becomes the next digit in our result. 
Result so far: 203391.66
If we take 636 away from 640, we end up with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Our division results in 203391.66 with a remaining 0.004.