66902355 divided by 89 
We want to divide 66902355 by 89.

On to step 1:
If we divide 6 by 89, we get 0 and a remainder of 6.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 6, we get 6.
Take the next digit (6) from the dividend and append it to 6, then repeat: 66 / 89

Going ahead to step 2:
89 goes into 66 0 times with a remainder of 66.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 66 leaves us with 66.
Include the next digit (9) from the dividend after 66, then repeat: 669 / 89

Moving on to step 3:
669 divided by 89 is 7 with a remainder of 46.
The next digit of our result is 7. 
Result so far: 7.0
Subtract 623 from 669 to get 46.
Fetch the next digit (0) from the dividend, attach it to 46 and continue: 460 / 89

Let's proceed to step 4:
When dividing 460 by 89, we get 5 with a remainder of 15.
Write down 5 as next digit of the result. 
Result so far: 75.0
The remainder is 15 after subtracting 445 from 460.
Append the next digit (2) from the dividend to 15 and continue with: 152 / 89

Moving on to step 5:
152 divided by 89 is 1 with a remainder of 63.
Write down 1 as next digit of the result. 
Result so far: 751.0
The remainder is 63 after subtracting 89 from 152.
Bring next digit (3) of the dividend behind the 63 and repeat the process: 633 / 89

Advancing to step 6:
The number 89 fits into 633 7 times, leaving a remainder of 10.
The next digit of our result is 7. 
Result so far: 7517.0
The remainder is 10 after subtracting 623 from 633.
Take the next digit (5) from the dividend and append it to 10, then repeat: 105 / 89

Advancing to step 7:
If we divide 105 by 89, we get 1 and a remainder of 16.
The next digit of our result is 1. 
Result so far: 75171.0
Subtracting 89 from 105 leaves us with 16.
Include the next digit (5) from the dividend after 16, then repeat: 165 / 89

On to step 8:
89 can be fit into 165 1 times, resulting in a remainder of 76.
Record the quotient 1 as the next digit in the result. 
Result so far: 751711.0
If we subtract 89 from 165, we get 76.
Since there are no more digits in the dividend, we add a zero to the remainder making it 760, and continue the process.

Step 9:
If we divide 760 by 89, we get 8 and a remainder of 48.
Record the quotient 8 as the next digit in the result. 
Result so far: 751711.8
Subtracting 712 from 760 leaves us with 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

Advancing to step 10:
When dividing 480 by 89, we get 5 with a remainder of 35.
The number 5 becomes the next digit in our result. 
Result so far: 751711.85
If we take 445 away from 480, we end up with 35.
Since there are no more digits in the dividend, we add a zero to the remainder making it 350, and continue the process.

Let's proceed to step 11:
If we divide 350 by 89, we get 3 and a remainder of 83.
The next digit of our result is 3. 
Result so far: 751711.853
Deduct 267 from 350 and we're left with 83.
Since there are no more digits in the dividend, we add a zero to the remainder making it 830, and continue the process.

Going ahead to step 12:
89 goes into 830 9 times with a remainder of 29.
Put 9 as the next digit of the answer. 
Result so far: 751711.8539
If we subtract 801 from 830, we get 29.
Since there are no more digits in the dividend, we add a zero to the remainder making it 290, and continue the process.

Moving on to step 13:
290 divided by 89 is 3 with a remainder of 23.
The number 3 becomes the next digit in our result. 
Result so far: 751711.85393
Deduct 267 from 290 and we're left with 23.
Since there are no more digits in the dividend, we add a zero to the remainder making it 230, and continue the process.

On to step 14:
89 can be fit into 230 2 times, resulting in a remainder of 52.
The next digit of our result is 2. 
Result so far: 751711.853932
Subtract 178 from 230 to get 52.
Since there are no more digits in the dividend, we add a zero to the remainder making it 520, and continue the process.

Going ahead to step 15:
89 can be fit into 520 5 times, resulting in a remainder of 75.
Write down 5 as next digit of the result. 
Result so far: 751711.8539325
Deduct 445 from 520 and we're left with 75.
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:
89 goes into 750 8 times with a remainder of 38.
Use 8 as the next digit of our solution. 
Result so far: 751711.85393258
Subtracting 712 from 750 leaves us with 38.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

The final result is 751711.85393258 with a remainder of 3.8e-08.