66301891 ÷ 83 
Our goal is to divide 66301891 by 83.

Going ahead to step 1:
6 divided by 83 is 0 with a remainder of 6.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 6 and we're left with 6.
Append the next digit (6) from the dividend to 6 and continue with: 66 / 83

Going ahead to step 2:
If we divide 66 by 83, we get 0 and a remainder of 66.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 66, we end up with 66.
Fetch the next digit (3) from the dividend, attach it to 66 and continue: 663 / 83

Advancing to step 3:
83 goes into 663 7 times with a remainder of 82.
Record the quotient 7 as the next digit in the result. 
Result so far: 7.0
The remainder is 82 after subtracting 581 from 663.
Bring next digit (0) of the dividend behind the 82 and repeat the process: 820 / 83

Going ahead to step 4:
820 divided by 83 is 9 with a remainder of 73.
Put 9 as the next digit of the answer. 
Result so far: 79.0
Subtract 747 from 820 to get 73.
Fetch the next digit (1) from the dividend, attach it to 73 and continue: 731 / 83

Going ahead to step 5:
83 goes into 731 8 times with a remainder of 67.
The number 8 becomes the next digit in our result. 
Result so far: 798.0
If we take 664 away from 731, we end up with 67.
Bring next digit (8) of the dividend behind the 67 and repeat the process: 678 / 83

Moving on to step 6:
678 divided by 83 is 8 with a remainder of 14.
The next digit of our result is 8. 
Result so far: 7988.0
Subtracting 664 from 678 leaves us with 14.
Take the next digit (9) from the dividend and append it to 14, then repeat: 149 / 83

Advancing to step 7:
149 divided by 83 is 1 with a remainder of 66.
Put 1 as the next digit of the answer. 
Result so far: 79881.0
Subtract 83 from 149 to get 66.
Grab the next digit (1) from the dividend, add it to 66, then carry on: 661 / 83

On to step 8:
83 goes into 661 7 times with a remainder of 80.
Use 7 as the next digit of our solution. 
Result so far: 798817.0
If we take 581 away from 661, we end up with 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

Step 9:
800 divided by 83 is 9 with a remainder of 53.
The next digit of our result is 9. 
Result so far: 798817.9
If we take 747 away from 800, we end up with 53.
Since there are no more digits in the dividend, we add a zero to the remainder making it 530, and continue the process.

Let's proceed to step 10:
When dividing 530 by 83, we get 6 with a remainder of 32.
The number 6 becomes the next digit in our result. 
Result so far: 798817.96
Deduct 498 from 530 and we're left with 32.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

On to step 11:
83 can be fit into 320 3 times, resulting in a remainder of 71.
The next digit of our result is 3. 
Result so far: 798817.963
The remainder is 71 after subtracting 249 from 320.
Since there are no more digits in the dividend, we add a zero to the remainder making it 710, and continue the process.

On to step 12:
The number 83 fits into 710 8 times, leaving a remainder of 46.
Record the quotient 8 as the next digit in the result. 
Result so far: 798817.9638
If we subtract 664 from 710, we get 46.
Since there are no more digits in the dividend, we add a zero to the remainder making it 460, and continue the process.

Moving on to step 13:
460 divided by 83 is 5 with a remainder of 45.
Put 5 as the next digit of the answer. 
Result so far: 798817.96385
Subtracting 415 from 460 leaves us with 45.
Since there are no more digits in the dividend, we add a zero to the remainder making it 450, and continue the process.

Advancing to step 14:
When dividing 450 by 83, we get 5 with a remainder of 35.
Write down 5 as next digit of the result. 
Result so far: 798817.963855
If we subtract 415 from 450, we get 35.
Since there are no more digits in the dividend, we add a zero to the remainder making it 350, and continue the process.

The final result is 798817.963855 with a remainder of 3.5e-06.