We look at the division of 78639106 by 801 
We want to divide 78639106 by 801.

Let's proceed to step 1:
801 can be fit into 7 0 times, resulting in a remainder of 7.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 7 after subtracting 0 from 7.
Bring next digit (8) of the dividend behind the 7 and repeat the process: 78 / 801

Going ahead to step 2:
When dividing 78 by 801, we get 0 with a remainder of 78.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 78, we get 78.
Append the next digit (6) from the dividend to 78 and continue with: 786 / 801

Moving on to step 3:
If we divide 786 by 801, we get 0 and a remainder of 786.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 786, we get 786.
Append the next digit (3) from the dividend to 786 and continue with: 7863 / 801

Let's proceed to step 4:
The number 801 fits into 7863 9 times, leaving a remainder of 654.
Record the quotient 9 as the next digit in the result. 
Result so far: 9.0
Deduct 7209 from 7863 and we're left with 654.
Grab the next digit (9) from the dividend, add it to 654, then carry on: 6549 / 801

On to step 5:
801 goes into 6549 8 times with a remainder of 141.
Put 8 as the next digit of the answer. 
Result so far: 98.0
The remainder is 141 after subtracting 6408 from 6549.
Bring next digit (1) of the dividend behind the 141 and repeat the process: 1411 / 801

Moving on to step 6:
801 can be fit into 1411 1 times, resulting in a remainder of 610.
Record the quotient 1 as the next digit in the result. 
Result so far: 981.0
Subtracting 801 from 1411 leaves us with 610.
Grab the next digit (0) from the dividend, add it to 610, then carry on: 6100 / 801

On to step 7:
If we divide 6100 by 801, we get 7 and a remainder of 493.
The number 7 becomes the next digit in our result. 
Result so far: 9817.0
Subtract 5607 from 6100 to get 493.
Fetch the next digit (6) from the dividend, attach it to 493 and continue: 4936 / 801

Advancing to step 8:
801 can be fit into 4936 6 times, resulting in a remainder of 130.
Put 6 as the next digit of the answer. 
Result so far: 98176.0
Deduct 4806 from 4936 and we're left with 130.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1300, and continue the process.

Going ahead to step 9:
801 can be fit into 1300 1 times, resulting in a remainder of 499.
The number 1 becomes the next digit in our result. 
Result so far: 98176.1
Subtract 801 from 1300 to get 499.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4990, and continue the process.

Let's proceed to step 10:
801 goes into 4990 6 times with a remainder of 184.
The number 6 becomes the next digit in our result. 
Result so far: 98176.16
The remainder is 184 after subtracting 4806 from 4990.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1840, and continue the process.

Let's proceed to step 11:
If we divide 1840 by 801, we get 2 and a remainder of 238.
Use 2 as the next digit of our solution. 
Result so far: 98176.162
Subtracting 1602 from 1840 leaves us with 238.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2380, and continue the process.

Going ahead to step 12:
If we divide 2380 by 801, we get 2 and a remainder of 778.
Use 2 as the next digit of our solution. 
Result so far: 98176.1622
If we subtract 1602 from 2380, we get 778.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7780, and continue the process.

Our division results in 98176.1622 with a remaining 0.00778.