83980769 divided by 870 
We want to figure out the number of times 83980769 can be divided by 870.

Going ahead to step 1:
8 divided by 870 is 0 with a remainder of 8.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 8 leaves us with 8.
Include the next digit (3) from the dividend after 8, then repeat: 83 / 870

Going ahead to step 2:
83 divided by 870 is 0 with a remainder of 83.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 83, we end up with 83.
Take the next digit (9) from the dividend and append it to 83, then repeat: 839 / 870

Advancing to step 3:
If we divide 839 by 870, we get 0 and a remainder of 839.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 839, we end up with 839.
Bring next digit (8) of the dividend behind the 839 and repeat the process: 8398 / 870

Let's proceed to step 4:
When dividing 8398 by 870, we get 9 with a remainder of 568.
Use 9 as the next digit of our solution. 
Result so far: 9.0
Deduct 7830 from 8398 and we're left with 568.
Fetch the next digit (0) from the dividend, attach it to 568 and continue: 5680 / 870

Moving on to step 5:
The number 870 fits into 5680 6 times, leaving a remainder of 460.
Write down 6 as next digit of the result. 
Result so far: 96.0
The remainder is 460 after subtracting 5220 from 5680.
Grab the next digit (7) from the dividend, add it to 460, then carry on: 4607 / 870

On to step 6:
870 goes into 4607 5 times with a remainder of 257.
Put 5 as the next digit of the answer. 
Result so far: 965.0
If we take 4350 away from 4607, we end up with 257.
Take the next digit (6) from the dividend and append it to 257, then repeat: 2576 / 870

Advancing to step 7:
When dividing 2576 by 870, we get 2 with a remainder of 836.
Use 2 as the next digit of our solution. 
Result so far: 9652.0
Subtract 1740 from 2576 to get 836.
Fetch the next digit (9) from the dividend, attach it to 836 and continue: 8369 / 870

On to step 8:
8369 divided by 870 is 9 with a remainder of 539.
Write down 9 as next digit of the result. 
Result so far: 96529.0
The remainder is 539 after subtracting 7830 from 8369.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5390, and continue the process.

Moving on to step 9:
5390 divided by 870 is 6 with a remainder of 170.
The next digit of our result is 6. 
Result so far: 96529.6
Subtracting 5220 from 5390 leaves us with 170.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1700, and continue the process.

Let's proceed to step 10:
The number 870 fits into 1700 1 times, leaving a remainder of 830.
The number 1 becomes the next digit in our result. 
Result so far: 96529.61
Deduct 870 from 1700 and we're left with 830.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8300, and continue the process.

Moving on to step 11:
870 goes into 8300 9 times with a remainder of 470.
The next digit of our result is 9. 
Result so far: 96529.619
If we take 7830 away from 8300, we end up with 470.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4700, and continue the process.

Step 12:
870 goes into 4700 5 times with a remainder of 350.
Write down 5 as next digit of the result. 
Result so far: 96529.6195
Deduct 4350 from 4700 and we're left with 350.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3500, and continue the process.

On to step 13:
When dividing 3500 by 870, we get 4 with a remainder of 20.
Record the quotient 4 as the next digit in the result. 
Result so far: 96529.61954
Subtracting 3480 from 3500 leaves us with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

On to step 14:
200 divided by 870 is 0 with a remainder of 200.
Record the quotient 0 as the next digit in the result. 
Result so far: 96529.61954
The remainder is 200 after subtracting 0 from 200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2000, and continue the process.

Going ahead to step 15:
When dividing 2000 by 870, we get 2 with a remainder of 260.
The next digit of our result is 2. 
Result so far: 96529.6195402
Subtract 1740 from 2000 to get 260.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2600, and continue the process.

Step 16:
When dividing 2600 by 870, we get 2 with a remainder of 860.
The next digit of our result is 2. 
Result so far: 96529.61954022
The remainder is 860 after subtracting 1740 from 2600.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8600, and continue the process.

The quotient of the division is 96529.61954022, and the remainder is 8.6e-07.