We look at the division of 83978398 by 523 
We want to divide 83978398 by 523.

Let's proceed to step 1:
When dividing 8 by 523, we get 0 with a remainder of 8.
Put 0 as the next digit of the answer. 
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 / 523

Going ahead to step 2:
The number 523 fits into 83 0 times, leaving a remainder of 83.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 83, we get 83.
Bring next digit (9) of the dividend behind the 83 and repeat the process: 839 / 523

Going ahead to step 3:
523 goes into 839 1 times with a remainder of 316.
Put 1 as the next digit of the answer. 
Result so far: 1.0
Subtract 523 from 839 to get 316.
Grab the next digit (7) from the dividend, add it to 316, then carry on: 3167 / 523

Moving on to step 4:
If we divide 3167 by 523, we get 6 and a remainder of 29.
Use 6 as the next digit of our solution. 
Result so far: 16.0
The remainder is 29 after subtracting 3138 from 3167.
Fetch the next digit (8) from the dividend, attach it to 29 and continue: 298 / 523

Going ahead to step 5:
If we divide 298 by 523, we get 0 and a remainder of 298.
Record the quotient 0 as the next digit in the result. 
Result so far: 160.0
If we subtract 0 from 298, we get 298.
Fetch the next digit (3) from the dividend, attach it to 298 and continue: 2983 / 523

Advancing to step 6:
523 goes into 2983 5 times with a remainder of 368.
The next digit of our result is 5. 
Result so far: 1605.0
Subtract 2615 from 2983 to get 368.
Grab the next digit (9) from the dividend, add it to 368, then carry on: 3689 / 523

Advancing to step 7:
If we divide 3689 by 523, we get 7 and a remainder of 28.
Put 7 as the next digit of the answer. 
Result so far: 16057.0
If we take 3661 away from 3689, we end up with 28.
Fetch the next digit (8) from the dividend, attach it to 28 and continue: 288 / 523

Let's proceed to step 8:
The number 523 fits into 288 0 times, leaving a remainder of 288.
The number 0 becomes the next digit in our result. 
Result so far: 160570.0
If we subtract 0 from 288, we get 288.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2880, and continue the process.

Moving on to step 9:
The number 523 fits into 2880 5 times, leaving a remainder of 265.
The number 5 becomes the next digit in our result. 
Result so far: 160570.5
The remainder is 265 after subtracting 2615 from 2880.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2650, and continue the process.

Moving on to step 10:
If we divide 2650 by 523, we get 5 and a remainder of 35.
The next digit of our result is 5. 
Result so far: 160570.55
Subtract 2615 from 2650 to 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 quotient of the division is 160570.55, and the remainder is 0.035.