We're dividing 66100521 by 217 
We want to divide 66100521 by 217.

Going ahead to step 1:
When dividing 6 by 217, we get 0 with a remainder of 6.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 6 after subtracting 0 from 6.
Bring next digit (6) of the dividend behind the 6 and repeat the process: 66 / 217

On to step 2:
217 can be fit into 66 0 times, resulting in a remainder of 66.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 66 after subtracting 0 from 66.
Take the next digit (1) from the dividend and append it to 66, then repeat: 661 / 217

Going ahead to step 3:
If we divide 661 by 217, we get 3 and a remainder of 10.
The next digit of our result is 3. 
Result so far: 3.0
Subtract 651 from 661 to get 10.
Bring next digit (0) of the dividend behind the 10 and repeat the process: 100 / 217

Let's proceed to step 4:
The number 217 fits into 100 0 times, leaving a remainder of 100.
The number 0 becomes the next digit in our result. 
Result so far: 30.0
Subtract 0 from 100 to get 100.
Append the next digit (0) from the dividend to 100 and continue with: 1000 / 217

Going ahead to step 5:
1000 divided by 217 is 4 with a remainder of 132.
The next digit of our result is 4. 
Result so far: 304.0
Subtracting 868 from 1000 leaves us with 132.
Include the next digit (5) from the dividend after 132, then repeat: 1325 / 217

Advancing to step 6:
217 goes into 1325 6 times with a remainder of 23.
Record the quotient 6 as the next digit in the result. 
Result so far: 3046.0
Subtracting 1302 from 1325 leaves us with 23.
Append the next digit (2) from the dividend to 23 and continue with: 232 / 217

Step 7:
When dividing 232 by 217, we get 1 with a remainder of 15.
Record the quotient 1 as the next digit in the result. 
Result so far: 30461.0
Deduct 217 from 232 and we're left with 15.
Include the next digit (1) from the dividend after 15, then repeat: 151 / 217

Advancing to step 8:
The number 217 fits into 151 0 times, leaving a remainder of 151.
Write down 0 as next digit of the result. 
Result so far: 304610.0
The remainder is 151 after subtracting 0 from 151.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1510, and continue the process.

Going ahead to step 9:
If we divide 1510 by 217, we get 6 and a remainder of 208.
Record the quotient 6 as the next digit in the result. 
Result so far: 304610.6
If we subtract 1302 from 1510, we get 208.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2080, and continue the process.

Moving on to step 10:
If we divide 2080 by 217, we get 9 and a remainder of 127.
Record the quotient 9 as the next digit in the result. 
Result so far: 304610.69
The remainder is 127 after subtracting 1953 from 2080.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1270, and continue the process.

Advancing to step 11:
1270 divided by 217 is 5 with a remainder of 185.
Use 5 as the next digit of our solution. 
Result so far: 304610.695
If we subtract 1085 from 1270, we get 185.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1850, and continue the process.

Moving on to step 12:
1850 divided by 217 is 8 with a remainder of 114.
The next digit of our result is 8. 
Result so far: 304610.6958
If we subtract 1736 from 1850, 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.

Going ahead to step 13:
217 goes into 1140 5 times with a remainder of 55.
Write down 5 as next digit of the result. 
Result so far: 304610.69585
If we subtract 1085 from 1140, 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.

Let's proceed to step 14:
217 goes into 550 2 times with a remainder of 116.
Put 2 as the next digit of the answer. 
Result so far: 304610.695852
If we take 434 away from 550, we end up 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.

Step 15:
The number 217 fits into 1160 5 times, leaving a remainder of 75.
Put 5 as the next digit of the answer. 
Result so far: 304610.6958525
The remainder is 75 after subtracting 1085 from 1160.
Since there are no more digits in the dividend, we add a zero to the remainder making it 750, and continue the process.

Step 16:
217 goes into 750 3 times with a remainder of 99.
Put 3 as the next digit of the answer. 
Result so far: 304610.69585253
Deduct 651 from 750 and we're left with 99.
Since there are no more digits in the dividend, we add a zero to the remainder making it 990, and continue the process.

The quotient of the division is 304610.69585253, and the remainder is 9.9e-08.