We look at the division of 21190521 by 83 
We want to figure out the number of times 21190521 can be divided by 83.

Moving on to step 1:
83 goes into 2 0 times with a remainder of 2.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 2, we get 2.
Bring next digit (1) of the dividend behind the 2 and repeat the process: 21 / 83

On to step 2:
83 goes into 21 0 times with a remainder of 21.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 21 leaves us with 21.
Append the next digit (1) from the dividend to 21 and continue with: 211 / 83

Moving on to step 3:
83 goes into 211 2 times with a remainder of 45.
Use 2 as the next digit of our solution. 
Result so far: 2.0
If we take 166 away from 211, we end up with 45.
Append the next digit (9) from the dividend to 45 and continue with: 459 / 83

On to step 4:
459 divided by 83 is 5 with a remainder of 44.
Use 5 as the next digit of our solution. 
Result so far: 25.0
Subtract 415 from 459 to get 44.
Grab the next digit (0) from the dividend, add it to 44, then carry on: 440 / 83

Going ahead to step 5:
When dividing 440 by 83, we get 5 with a remainder of 25.
Write down 5 as next digit of the result. 
Result so far: 255.0
Subtract 415 from 440 to get 25.
Bring next digit (5) of the dividend behind the 25 and repeat the process: 255 / 83

On to step 6:
When dividing 255 by 83, we get 3 with a remainder of 6.
The number 3 becomes the next digit in our result. 
Result so far: 2553.0
Subtracting 249 from 255 leaves us with 6.
Bring next digit (2) of the dividend behind the 6 and repeat the process: 62 / 83

Step 7:
83 can be fit into 62 0 times, resulting in a remainder of 62.
Use 0 as the next digit of our solution. 
Result so far: 25530.0
Subtract 0 from 62 to get 62.
Include the next digit (1) from the dividend after 62, then repeat: 621 / 83

On to step 8:
83 goes into 621 7 times with a remainder of 40.
The next digit of our result is 7. 
Result so far: 255307.0
If we take 581 away from 621, we end up with 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Advancing to step 9:
83 goes into 400 4 times with a remainder of 68.
Write down 4 as next digit of the result. 
Result so far: 255307.4
Subtract 332 from 400 to get 68.
Since there are no more digits in the dividend, we add a zero to the remainder making it 680, and continue the process.

On to step 10:
83 goes into 680 8 times with a remainder of 16.
The number 8 becomes the next digit in our result. 
Result so far: 255307.48
Subtract 664 from 680 to get 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Moving on to step 11:
When dividing 160 by 83, we get 1 with a remainder of 77.
Put 1 as the next digit of the answer. 
Result so far: 255307.481
Deduct 83 from 160 and we're left with 77.
Since there are no more digits in the dividend, we add a zero to the remainder making it 770, and continue the process.

Advancing to step 12:
83 goes into 770 9 times with a remainder of 23.
Write down 9 as next digit of the result. 
Result so far: 255307.4819
Subtracting 747 from 770 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.

Let's proceed to step 13:
The number 83 fits into 230 2 times, leaving a remainder of 64.
Record the quotient 2 as the next digit in the result. 
Result so far: 255307.48192
Subtract 166 from 230 to get 64.
Since there are no more digits in the dividend, we add a zero to the remainder making it 640, and continue the process.

Going ahead to step 14:
If we divide 640 by 83, we get 7 and a remainder of 59.
Record the quotient 7 as the next digit in the result. 
Result so far: 255307.481927
If we take 581 away from 640, we end up with 59.
Since there are no more digits in the dividend, we add a zero to the remainder making it 590, and continue the process.

Advancing to step 15:
590 divided by 83 is 7 with a remainder of 9.
The number 7 becomes the next digit in our result. 
Result so far: 255307.4819277
If we take 581 away from 590, we end up with 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

The final result is 255307.4819277 with a remainder of 9e-08.