We divide 81601890 by 166
Our goal is to divide 81601890 by 166.

Moving on to step 1:
166 goes into 8 0 times with a remainder of 8.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 8 to get 8.
Bring next digit (1) of the dividend behind the 8 and repeat the process: 81 / 166

On to step 2:
If we divide 81 by 166, we get 0 and a remainder of 81.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 81 leaves us with 81.
Bring next digit (6) of the dividend behind the 81 and repeat the process: 816 / 166

Moving on to step 3:
The number 166 fits into 816 4 times, leaving a remainder of 152.
The next digit of our result is 4. 
Result so far: 4.0
Subtract 664 from 816 to get 152.
Grab the next digit (0) from the dividend, add it to 152, then carry on: 1520 / 166

On to step 4:
When dividing 1520 by 166, we get 9 with a remainder of 26.
Put 9 as the next digit of the answer. 
Result so far: 49.0
Subtracting 1494 from 1520 leaves us with 26.
Bring next digit (1) of the dividend behind the 26 and repeat the process: 261 / 166

Let's proceed to step 5:
If we divide 261 by 166, we get 1 and a remainder of 95.
Record the quotient 1 as the next digit in the result. 
Result so far: 491.0
Deduct 166 from 261 and we're left with 95.
Append the next digit (8) from the dividend to 95 and continue with: 958 / 166

Going ahead to step 6:
When dividing 958 by 166, we get 5 with a remainder of 128.
Record the quotient 5 as the next digit in the result. 
Result so far: 4915.0
Subtracting 830 from 958 leaves us with 128.
Append the next digit (9) from the dividend to 128 and continue with: 1289 / 166

Advancing to step 7:
166 goes into 1289 7 times with a remainder of 127.
Use 7 as the next digit of our solution. 
Result so far: 49157.0
Deduct 1162 from 1289 and we're left with 127.
Append the next digit (0) from the dividend to 127 and continue with: 1270 / 166

Moving on to step 8:
166 goes into 1270 7 times with a remainder of 108.
The number 7 becomes the next digit in our result. 
Result so far: 491577.0
Deduct 1162 from 1270 and we're left with 108.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1080, and continue the process.

Advancing to step 9:
1080 divided by 166 is 6 with a remainder of 84.
Write down 6 as next digit of the result. 
Result so far: 491577.6
Subtracting 996 from 1080 leaves us with 84.
Since there are no more digits in the dividend, we add a zero to the remainder making it 840, and continue the process.

Advancing to step 10:
The number 166 fits into 840 5 times, leaving a remainder of 10.
Record the quotient 5 as the next digit in the result. 
Result so far: 491577.65
The remainder is 10 after subtracting 830 from 840.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

On to step 11:
100 divided by 166 is 0 with a remainder of 100.
Put 0 as the next digit of the answer. 
Result so far: 491577.65
Subtract 0 from 100 to get 100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1000, and continue the process.

Moving on to step 12:
166 goes into 1000 6 times with a remainder of 4.
The number 6 becomes the next digit in our result. 
Result so far: 491577.6506
The remainder is 4 after subtracting 996 from 1000.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Let's proceed to step 13:
166 goes into 40 0 times with a remainder of 40.
Record the quotient 0 as the next digit in the result. 
Result so far: 491577.6506
Subtract 0 from 40 to get 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Let's proceed to step 14:
When dividing 400 by 166, we get 2 with a remainder of 68.
The next digit of our result is 2. 
Result so far: 491577.650602
If we take 332 away from 400, we end up with 68.
Since there are no more digits in the dividend, we add a zero to the remainder making it 680, and continue the process.

Step 15:
680 divided by 166 is 4 with a remainder of 16.
Use 4 as the next digit of our solution. 
Result so far: 491577.6506024
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.

Advancing to step 16:
166 can be fit into 160 0 times, resulting in a remainder of 160.
The number 0 becomes the next digit in our result. 
Result so far: 491577.6506024
Subtracting 0 from 160 leaves us with 160.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1600, and continue the process.

The quotient of the division is 491577.6506024, and the remainder is 1.6e-07.