We're dividing 78520220 by 641 
We want to divide 78520220 by 641.

Moving on to step 1:
When dividing 7 by 641, we get 0 with a remainder of 7.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 7, we end up with 7.
Grab the next digit (8) from the dividend, add it to 7, then carry on: 78 / 641

Let's proceed to step 2:
78 divided by 641 is 0 with a remainder of 78.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 78 to get 78.
Bring next digit (5) of the dividend behind the 78 and repeat the process: 785 / 641

Advancing to step 3:
When dividing 785 by 641, we get 1 with a remainder of 144.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
Subtracting 641 from 785 leaves us with 144.
Take the next digit (2) from the dividend and append it to 144, then repeat: 1442 / 641

Step 4:
1442 divided by 641 is 2 with a remainder of 160.
Use 2 as the next digit of our solution. 
Result so far: 12.0
If we take 1282 away from 1442, we end up with 160.
Take the next digit (0) from the dividend and append it to 160, then repeat: 1600 / 641

Moving on to step 5:
641 can be fit into 1600 2 times, resulting in a remainder of 318.
The next digit of our result is 2. 
Result so far: 122.0
If we subtract 1282 from 1600, we get 318.
Take the next digit (2) from the dividend and append it to 318, then repeat: 3182 / 641

Step 6:
641 goes into 3182 4 times with a remainder of 618.
Put 4 as the next digit of the answer. 
Result so far: 1224.0
Deduct 2564 from 3182 and we're left with 618.
Bring next digit (2) of the dividend behind the 618 and repeat the process: 6182 / 641

Let's proceed to step 7:
When dividing 6182 by 641, we get 9 with a remainder of 413.
Write down 9 as next digit of the result. 
Result so far: 12249.0
Deduct 5769 from 6182 and we're left with 413.
Append the next digit (0) from the dividend to 413 and continue with: 4130 / 641

On to step 8:
641 can be fit into 4130 6 times, resulting in a remainder of 284.
Put 6 as the next digit of the answer. 
Result so far: 122496.0
Subtracting 3846 from 4130 leaves us with 284.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2840, and continue the process.

Going ahead to step 9:
The number 641 fits into 2840 4 times, leaving a remainder of 276.
Put 4 as the next digit of the answer. 
Result so far: 122496.4
If we subtract 2564 from 2840, we get 276.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2760, and continue the process.

Advancing to step 10:
641 goes into 2760 4 times with a remainder of 196.
Put 4 as the next digit of the answer. 
Result so far: 122496.44
The remainder is 196 after subtracting 2564 from 2760.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1960, and continue the process.

The quotient of the division is 122496.44, and the remainder is 0.196.