81666556 ÷ 197 
Let's see how many times 197 fits into 81666556.

Moving on to step 1:
The number 197 fits into 8 0 times, leaving a remainder of 8.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 8 after subtracting 0 from 8.
Bring next digit (1) of the dividend behind the 8 and repeat the process: 81 / 197

On to step 2:
If we divide 81 by 197, we get 0 and a remainder of 81.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 81 to get 81.
Include the next digit (6) from the dividend after 81, then repeat: 816 / 197

Going ahead to step 3:
When dividing 816 by 197, we get 4 with a remainder of 28.
The next digit of our result is 4. 
Result so far: 4.0
The remainder is 28 after subtracting 788 from 816.
Bring next digit (6) of the dividend behind the 28 and repeat the process: 286 / 197

Let's proceed to step 4:
When dividing 286 by 197, we get 1 with a remainder of 89.
Use 1 as the next digit of our solution. 
Result so far: 41.0
The remainder is 89 after subtracting 197 from 286.
Grab the next digit (6) from the dividend, add it to 89, then carry on: 896 / 197

On to step 5:
The number 197 fits into 896 4 times, leaving a remainder of 108.
Put 4 as the next digit of the answer. 
Result so far: 414.0
If we subtract 788 from 896, we get 108.
Include the next digit (5) from the dividend after 108, then repeat: 1085 / 197

On to step 6:
If we divide 1085 by 197, we get 5 and a remainder of 100.
The number 5 becomes the next digit in our result. 
Result so far: 4145.0
If we take 985 away from 1085, we end up with 100.
Include the next digit (5) from the dividend after 100, then repeat: 1005 / 197

Advancing to step 7:
The number 197 fits into 1005 5 times, leaving a remainder of 20.
Write down 5 as next digit of the result. 
Result so far: 41455.0
The remainder is 20 after subtracting 985 from 1005.
Include the next digit (6) from the dividend after 20, then repeat: 206 / 197

Going ahead to step 8:
197 can be fit into 206 1 times, resulting in a remainder of 9.
Use 1 as the next digit of our solution. 
Result so far: 414551.0
Subtracting 197 from 206 leaves us 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.

Going ahead to step 9:
197 can be fit into 90 0 times, resulting in a remainder of 90.
Record the quotient 0 as the next digit in the result. 
Result so far: 414551.0
Deduct 0 from 90 and we're left with 90.
Since there are no more digits in the dividend, we add a zero to the remainder making it 900, and continue the process.

On to step 10:
197 can be fit into 900 4 times, resulting in a remainder of 112.
Use 4 as the next digit of our solution. 
Result so far: 414551.04
Deduct 788 from 900 and we're left with 112.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1120, and continue the process.

Going ahead to step 11:
If we divide 1120 by 197, we get 5 and a remainder of 135.
Record the quotient 5 as the next digit in the result. 
Result so far: 414551.045
Subtracting 985 from 1120 leaves us with 135.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1350, and continue the process.

On to step 12:
1350 divided by 197 is 6 with a remainder of 168.
Put 6 as the next digit of the answer. 
Result so far: 414551.0456
Subtract 1182 from 1350 to get 168.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1680, and continue the process.

Moving on to step 13:
If we divide 1680 by 197, we get 8 and a remainder of 104.
Put 8 as the next digit of the answer. 
Result so far: 414551.04568
Deduct 1576 from 1680 and we're left with 104.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1040, and continue the process.

Let's proceed to step 14:
197 can be fit into 1040 5 times, resulting in a remainder of 55.
The next digit of our result is 5. 
Result so far: 414551.045685
If we subtract 985 from 1040, we get 55.
Since there are no more digits in the dividend, we add a zero to the remainder making it 550, and continue the process.

Going ahead to step 15:
When dividing 550 by 197, we get 2 with a remainder of 156.
Write down 2 as next digit of the result. 
Result so far: 414551.0456852
If we subtract 394 from 550, we get 156.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1560, and continue the process.

Step 16:
When dividing 1560 by 197, we get 7 with a remainder of 181.
The number 7 becomes the next digit in our result. 
Result so far: 414551.04568527
Subtract 1379 from 1560 to get 181.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1810, and continue the process.

After the division, we end up with 414551.04568527 and a remainder of 1.81e-07.