Let's divide 78356431 by 806
We want to divide 78356431 by 806.

On to step 1:
The number 806 fits into 7 0 times, leaving a remainder of 7.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 7 to get 7.
Bring next digit (8) of the dividend behind the 7 and repeat the process: 78 / 806

Moving on to step 2:
When dividing 78 by 806, we get 0 with a remainder of 78.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 78 to get 78.
Append the next digit (3) from the dividend to 78 and continue with: 783 / 806

Moving on to step 3:
When dividing 783 by 806, we get 0 with a remainder of 783.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 783 leaves us with 783.
Fetch the next digit (5) from the dividend, attach it to 783 and continue: 7835 / 806

Going ahead to step 4:
The number 806 fits into 7835 9 times, leaving a remainder of 581.
Put 9 as the next digit of the answer. 
Result so far: 9.0
If we take 7254 away from 7835, we end up with 581.
Bring next digit (6) of the dividend behind the 581 and repeat the process: 5816 / 806

Let's proceed to step 5:
If we divide 5816 by 806, we get 7 and a remainder of 174.
Use 7 as the next digit of our solution. 
Result so far: 97.0
If we subtract 5642 from 5816, we get 174.
Grab the next digit (4) from the dividend, add it to 174, then carry on: 1744 / 806

Step 6:
1744 divided by 806 is 2 with a remainder of 132.
Use 2 as the next digit of our solution. 
Result so far: 972.0
Deduct 1612 from 1744 and we're left with 132.
Bring next digit (3) of the dividend behind the 132 and repeat the process: 1323 / 806

Step 7:
The number 806 fits into 1323 1 times, leaving a remainder of 517.
The next digit of our result is 1. 
Result so far: 9721.0
Subtract 806 from 1323 to get 517.
Bring next digit (1) of the dividend behind the 517 and repeat the process: 5171 / 806

On to step 8:
If we divide 5171 by 806, we get 6 and a remainder of 335.
Put 6 as the next digit of the answer. 
Result so far: 97216.0
If we subtract 4836 from 5171, we get 335.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3350, and continue the process.

Step 9:
When dividing 3350 by 806, we get 4 with a remainder of 126.
Write down 4 as next digit of the result. 
Result so far: 97216.4
If we subtract 3224 from 3350, we get 126.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1260, and continue the process.

Moving on to step 10:
The number 806 fits into 1260 1 times, leaving a remainder of 454.
Use 1 as the next digit of our solution. 
Result so far: 97216.41
If we subtract 806 from 1260, we get 454.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4540, and continue the process.

Going ahead to step 11:
If we divide 4540 by 806, we get 5 and a remainder of 510.
Put 5 as the next digit of the answer. 
Result so far: 97216.415
If we take 4030 away from 4540, we end up with 510.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5100, and continue the process.

On to step 12:
806 can be fit into 5100 6 times, resulting in a remainder of 264.
Put 6 as the next digit of the answer. 
Result so far: 97216.4156
The remainder is 264 after subtracting 4836 from 5100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2640, and continue the process.

On to step 13:
806 goes into 2640 3 times with a remainder of 222.
Use 3 as the next digit of our solution. 
Result so far: 97216.41563
If we subtract 2418 from 2640, we get 222.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2220, and continue the process.

Going ahead to step 14:
2220 divided by 806 is 2 with a remainder of 608.
Record the quotient 2 as the next digit in the result. 
Result so far: 97216.415632
Subtracting 1612 from 2220 leaves us with 608.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6080, and continue the process.

Step 15:
806 goes into 6080 7 times with a remainder of 438.
Write down 7 as next digit of the result. 
Result so far: 97216.4156327
Subtract 5642 from 6080 to get 438.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4380, and continue the process.

Moving on to step 16:
4380 divided by 806 is 5 with a remainder of 350.
Write down 5 as next digit of the result. 
Result so far: 97216.41563275
Subtract 4030 from 4380 to get 350.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3500, and continue the process.

The quotient of the division is 97216.41563275, and the remainder is 3.5e-07.