We divide 81660353 by 513
We're looking to find how many times 513 goes into 81660353.

Moving on to step 1:
When dividing 8 by 513, we get 0 with a remainder of 8.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 8 after subtracting 0 from 8.
Include the next digit (1) from the dividend after 8, then repeat: 81 / 513

Let's proceed to step 2:
513 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
Subtract 0 from 81 to get 81.
Fetch the next digit (6) from the dividend, attach it to 81 and continue: 816 / 513

Advancing to step 3:
513 goes into 816 1 times with a remainder of 303.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
Deduct 513 from 816 and we're left with 303.
Include the next digit (6) from the dividend after 303, then repeat: 3036 / 513

Advancing to step 4:
The number 513 fits into 3036 5 times, leaving a remainder of 471.
The number 5 becomes the next digit in our result. 
Result so far: 15.0
Subtracting 2565 from 3036 leaves us with 471.
Append the next digit (0) from the dividend to 471 and continue with: 4710 / 513

Let's proceed to step 5:
If we divide 4710 by 513, we get 9 and a remainder of 93.
Use 9 as the next digit of our solution. 
Result so far: 159.0
Subtract 4617 from 4710 to get 93.
Bring next digit (3) of the dividend behind the 93 and repeat the process: 933 / 513

Step 6:
513 goes into 933 1 times with a remainder of 420.
Record the quotient 1 as the next digit in the result. 
Result so far: 1591.0
Subtracting 513 from 933 leaves us with 420.
Grab the next digit (5) from the dividend, add it to 420, then carry on: 4205 / 513

Step 7:
When dividing 4205 by 513, we get 8 with a remainder of 101.
Write down 8 as next digit of the result. 
Result so far: 15918.0
Subtract 4104 from 4205 to get 101.
Fetch the next digit (3) from the dividend, attach it to 101 and continue: 1013 / 513

Advancing to step 8:
513 can be fit into 1013 1 times, resulting in a remainder of 500.
The number 1 becomes the next digit in our result. 
Result so far: 159181.0
The remainder is 500 after subtracting 513 from 1013.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5000, and continue the process.

Going ahead to step 9:
The number 513 fits into 5000 9 times, leaving a remainder of 383.
Record the quotient 9 as the next digit in the result. 
Result so far: 159181.9
Subtracting 4617 from 5000 leaves us with 383.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3830, and continue the process.

On to step 10:
3830 divided by 513 is 7 with a remainder of 239.
Write down 7 as next digit of the result. 
Result so far: 159181.97
Deduct 3591 from 3830 and we're left with 239.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2390, and continue the process.

Moving on to step 11:
If we divide 2390 by 513, we get 4 and a remainder of 338.
Put 4 as the next digit of the answer. 
Result so far: 159181.974
Deduct 2052 from 2390 and we're left with 338.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3380, and continue the process.

Moving on to step 12:
When dividing 3380 by 513, we get 6 with a remainder of 302.
Put 6 as the next digit of the answer. 
Result so far: 159181.9746
Subtracting 3078 from 3380 leaves us with 302.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3020, and continue the process.

Step 13:
The number 513 fits into 3020 5 times, leaving a remainder of 455.
The number 5 becomes the next digit in our result. 
Result so far: 159181.97465
If we subtract 2565 from 3020, we get 455.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4550, and continue the process.

Going ahead to step 14:
If we divide 4550 by 513, we get 8 and a remainder of 446.
The number 8 becomes the next digit in our result. 
Result so far: 159181.974658
Deduct 4104 from 4550 and we're left with 446.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4460, and continue the process.

Step 15:
The number 513 fits into 4460 8 times, leaving a remainder of 356.
The number 8 becomes the next digit in our result. 
Result so far: 159181.9746588
The remainder is 356 after subtracting 4104 from 4460.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3560, and continue the process.

The final result is 159181.9746588 with a remainder of 3.56e-06.