Let's divide 81290115 by 158
We want to divide 81290115 by 158.

Going ahead to step 1:
When dividing 8 by 158, we get 0 with a remainder of 8.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 8, we get 8.
Bring next digit (1) of the dividend behind the 8 and repeat the process: 81 / 158

Step 2:
158 can be fit into 81 0 times, resulting in a remainder of 81.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 81 leaves us with 81.
Include the next digit (2) from the dividend after 81, then repeat: 812 / 158

Going ahead to step 3:
If we divide 812 by 158, we get 5 and a remainder of 22.
The next digit of our result is 5. 
Result so far: 5.0
Subtracting 790 from 812 leaves us with 22.
Grab the next digit (9) from the dividend, add it to 22, then carry on: 229 / 158

Step 4:
If we divide 229 by 158, we get 1 and a remainder of 71.
Record the quotient 1 as the next digit in the result. 
Result so far: 51.0
The remainder is 71 after subtracting 158 from 229.
Append the next digit (0) from the dividend to 71 and continue with: 710 / 158

Let's proceed to step 5:
710 divided by 158 is 4 with a remainder of 78.
The number 4 becomes the next digit in our result. 
Result so far: 514.0
Deduct 632 from 710 and we're left with 78.
Append the next digit (1) from the dividend to 78 and continue with: 781 / 158

Step 6:
The number 158 fits into 781 4 times, leaving a remainder of 149.
Record the quotient 4 as the next digit in the result. 
Result so far: 5144.0
Subtracting 632 from 781 leaves us with 149.
Bring next digit (1) of the dividend behind the 149 and repeat the process: 1491 / 158

Step 7:
If we divide 1491 by 158, we get 9 and a remainder of 69.
Put 9 as the next digit of the answer. 
Result so far: 51449.0
Subtracting 1422 from 1491 leaves us with 69.
Include the next digit (5) from the dividend after 69, then repeat: 695 / 158

Let's proceed to step 8:
695 divided by 158 is 4 with a remainder of 63.
Write down 4 as next digit of the result. 
Result so far: 514494.0
Subtracting 632 from 695 leaves us with 63.
Since there are no more digits in the dividend, we add a zero to the remainder making it 630, and continue the process.

Advancing to step 9:
630 divided by 158 is 3 with a remainder of 156.
Record the quotient 3 as the next digit in the result. 
Result so far: 514494.3
Subtracting 474 from 630 leaves us with 156.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1560, and continue the process.

Going ahead to step 10:
158 can be fit into 1560 9 times, resulting in a remainder of 138.
The number 9 becomes the next digit in our result. 
Result so far: 514494.39
If we take 1422 away from 1560, we end up with 138.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1380, and continue the process.

On to step 11:
When dividing 1380 by 158, we get 8 with a remainder of 116.
Put 8 as the next digit of the answer. 
Result so far: 514494.398
Deduct 1264 from 1380 and we're left with 116.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1160, and continue the process.

Advancing to step 12:
158 can be fit into 1160 7 times, resulting in a remainder of 54.
The number 7 becomes the next digit in our result. 
Result so far: 514494.3987
Subtracting 1106 from 1160 leaves us with 54.
Since there are no more digits in the dividend, we add a zero to the remainder making it 540, and continue the process.

Advancing to step 13:
540 divided by 158 is 3 with a remainder of 66.
Record the quotient 3 as the next digit in the result. 
Result so far: 514494.39873
Subtract 474 from 540 to get 66.
Since there are no more digits in the dividend, we add a zero to the remainder making it 660, and continue the process.

Let's proceed to step 14:
158 goes into 660 4 times with a remainder of 28.
Write down 4 as next digit of the result. 
Result so far: 514494.398734
Deduct 632 from 660 and we're left with 28.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

On to step 15:
The number 158 fits into 280 1 times, leaving a remainder of 122.
Put 1 as the next digit of the answer. 
Result so far: 514494.3987341
Subtracting 158 from 280 leaves us with 122.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1220, and continue the process.

Moving on to step 16:
If we divide 1220 by 158, we get 7 and a remainder of 114.
Write down 7 as next digit of the result. 
Result so far: 514494.39873417
If we subtract 1106 from 1220, we get 114.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1140, and continue the process.

After the division, we end up with 514494.39873417 and a remainder of 1.14e-07.