We look at the division of 21979793 by 158 
Let's see how many times 158 fits into 21979793.

Advancing to step 1:
When dividing 2 by 158, we get 0 with a remainder of 2.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 2, we end up with 2.
Bring next digit (1) of the dividend behind the 2 and repeat the process: 21 / 158

Moving on to step 2:
158 can be fit into 21 0 times, resulting in 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.
Include the next digit (9) from the dividend after 21, then repeat: 219 / 158

Going ahead to step 3:
158 can be fit into 219 1 times, resulting in a remainder of 61.
Use 1 as the next digit of our solution. 
Result so far: 1.0
If we subtract 158 from 219, we get 61.
Fetch the next digit (7) from the dividend, attach it to 61 and continue: 617 / 158

Going ahead to step 4:
158 goes into 617 3 times with a remainder of 143.
Record the quotient 3 as the next digit in the result. 
Result so far: 13.0
If we subtract 474 from 617, we get 143.
Take the next digit (9) from the dividend and append it to 143, then repeat: 1439 / 158

Advancing to step 5:
The number 158 fits into 1439 9 times, leaving a remainder of 17.
Write down 9 as next digit of the result. 
Result so far: 139.0
Deduct 1422 from 1439 and we're left with 17.
Fetch the next digit (7) from the dividend, attach it to 17 and continue: 177 / 158

Going ahead to step 6:
If we divide 177 by 158, we get 1 and a remainder of 19.
Put 1 as the next digit of the answer. 
Result so far: 1391.0
Subtract 158 from 177 to get 19.
Include the next digit (9) from the dividend after 19, then repeat: 199 / 158

Advancing to step 7:
When dividing 199 by 158, we get 1 with a remainder of 41.
Use 1 as the next digit of our solution. 
Result so far: 13911.0
If we subtract 158 from 199, we get 41.
Grab the next digit (3) from the dividend, add it to 41, then carry on: 413 / 158

Let's proceed to step 8:
413 divided by 158 is 2 with a remainder of 97.
The number 2 becomes the next digit in our result. 
Result so far: 139112.0
Subtracting 316 from 413 leaves us with 97.
Since there are no more digits in the dividend, we add a zero to the remainder making it 970, and continue the process.

Advancing to step 9:
If we divide 970 by 158, we get 6 and a remainder of 22.
Record the quotient 6 as the next digit in the result. 
Result so far: 139112.6
Subtract 948 from 970 to get 22.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

On to step 10:
If we divide 220 by 158, we get 1 and a remainder of 62.
Put 1 as the next digit of the answer. 
Result so far: 139112.61
Subtracting 158 from 220 leaves us with 62.
Since there are no more digits in the dividend, we add a zero to the remainder making it 620, and continue the process.

Advancing to step 11:
158 can be fit into 620 3 times, resulting in a remainder of 146.
Record the quotient 3 as the next digit in the result. 
Result so far: 139112.613
Deduct 474 from 620 and we're left with 146.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1460, and continue the process.

Advancing to step 12:
If we divide 1460 by 158, we get 9 and a remainder of 38.
Record the quotient 9 as the next digit in the result. 
Result so far: 139112.6139
If we take 1422 away from 1460, we end up with 38.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

Going ahead to step 13:
380 divided by 158 is 2 with a remainder of 64.
Use 2 as the next digit of our solution. 
Result so far: 139112.61392
The remainder is 64 after subtracting 316 from 380.
Since there are no more digits in the dividend, we add a zero to the remainder making it 640, and continue the process.

Step 14:
640 divided by 158 is 4 with a remainder of 8.
Write down 4 as next digit of the result. 
Result so far: 139112.613924
Deduct 632 from 640 and we're left with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Advancing to step 15:
80 divided by 158 is 0 with a remainder of 80.
Put 0 as the next digit of the answer. 
Result so far: 139112.613924
The remainder is 80 after subtracting 0 from 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

Step 16:
158 goes into 800 5 times with a remainder of 10.
Write down 5 as next digit of the result. 
Result so far: 139112.61392405
If we take 790 away from 800, we end up with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

The final result is 139112.61392405 with a remainder of 1e-08.