81158388 divided by 166 
We want to figure out the number of times 81158388 can be divided by 166.

Let's proceed to step 1:
If we divide 8 by 166, we get 0 and a remainder of 8.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 8, we end up with 8.
Take the next digit (1) from the dividend and append it to 8, then repeat: 81 / 166

Advancing to step 2:
166 can be fit into 81 0 times, resulting in a remainder of 81.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 81 to get 81.
Take the next digit (1) from the dividend and append it to 81, then repeat: 811 / 166

Step 3:
If we divide 811 by 166, we get 4 and a remainder of 147.
Write down 4 as next digit of the result. 
Result so far: 4.0
Subtract 664 from 811 to get 147.
Include the next digit (5) from the dividend after 147, then repeat: 1475 / 166

Advancing to step 4:
If we divide 1475 by 166, we get 8 and a remainder of 147.
The next digit of our result is 8. 
Result so far: 48.0
Subtracting 1328 from 1475 leaves us with 147.
Take the next digit (8) from the dividend and append it to 147, then repeat: 1478 / 166

Advancing to step 5:
If we divide 1478 by 166, we get 8 and a remainder of 150.
Put 8 as the next digit of the answer. 
Result so far: 488.0
Subtract 1328 from 1478 to get 150.
Bring next digit (3) of the dividend behind the 150 and repeat the process: 1503 / 166

Let's proceed to step 6:
166 can be fit into 1503 9 times, resulting in a remainder of 9.
Use 9 as the next digit of our solution. 
Result so far: 4889.0
Subtract 1494 from 1503 to get 9.
Grab the next digit (8) from the dividend, add it to 9, then carry on: 98 / 166

On to step 7:
The number 166 fits into 98 0 times, leaving a remainder of 98.
The next digit of our result is 0. 
Result so far: 48890.0
If we take 0 away from 98, we end up with 98.
Bring next digit (8) of the dividend behind the 98 and repeat the process: 988 / 166

Step 8:
988 divided by 166 is 5 with a remainder of 158.
The number 5 becomes the next digit in our result. 
Result so far: 488905.0
If we subtract 830 from 988, we get 158.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1580, and continue the process.

Moving on to step 9:
If we divide 1580 by 166, we get 9 and a remainder of 86.
The next digit of our result is 9. 
Result so far: 488905.9
Subtracting 1494 from 1580 leaves us with 86.
Since there are no more digits in the dividend, we add a zero to the remainder making it 860, and continue the process.

Going ahead to step 10:
166 goes into 860 5 times with a remainder of 30.
Record the quotient 5 as the next digit in the result. 
Result so far: 488905.95
The remainder is 30 after subtracting 830 from 860.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Step 11:
When dividing 300 by 166, we get 1 with a remainder of 134.
Put 1 as the next digit of the answer. 
Result so far: 488905.951
Subtracting 166 from 300 leaves us with 134.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1340, and continue the process.

Going ahead to step 12:
166 can be fit into 1340 8 times, resulting in a remainder of 12.
Put 8 as the next digit of the answer. 
Result so far: 488905.9518
Deduct 1328 from 1340 and we're left with 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Going ahead to step 13:
166 can be fit into 120 0 times, resulting in a remainder of 120.
Put 0 as the next digit of the answer. 
Result so far: 488905.9518
If we take 0 away from 120, we end up with 120.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1200, and continue the process.

Going ahead to step 14:
The number 166 fits into 1200 7 times, leaving a remainder of 38.
Write down 7 as next digit of the result. 
Result so far: 488905.951807
Subtracting 1162 from 1200 leaves us 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.

Advancing to step 15:
If we divide 380 by 166, we get 2 and a remainder of 48.
Put 2 as the next digit of the answer. 
Result so far: 488905.9518072
Subtract 332 from 380 to get 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

On to step 16:
166 goes into 480 2 times with a remainder of 148.
The number 2 becomes the next digit in our result. 
Result so far: 488905.95180722
Subtracting 332 from 480 leaves us with 148.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1480, and continue the process.

Our division results in 488905.95180722 with a remaining 1.48e-07.