We're dividing 629431 by 78 
We want to figure out the number of times 629431 can be divided by 78.

Moving on to step 1:
If we divide 6 by 78, we get 0 and a remainder of 6.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 6 and we're left with 6.
Fetch the next digit (2) from the dividend, attach it to 6 and continue: 62 / 78

Step 2:
78 can be fit into 62 0 times, resulting in a remainder of 62.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 62, we get 62.
Fetch the next digit (9) from the dividend, attach it to 62 and continue: 629 / 78

Going ahead to step 3:
The number 78 fits into 629 8 times, leaving a remainder of 5.
Write down 8 as next digit of the result. 
Result so far: 8.0
If we take 624 away from 629, we end up with 5.
Fetch the next digit (4) from the dividend, attach it to 5 and continue: 54 / 78

Advancing to step 4:
78 goes into 54 0 times with a remainder of 54.
Write down 0 as next digit of the result. 
Result so far: 80.0
Deduct 0 from 54 and we're left with 54.
Grab the next digit (3) from the dividend, add it to 54, then carry on: 543 / 78

Going ahead to step 5:
78 goes into 543 6 times with a remainder of 75.
The next digit of our result is 6. 
Result so far: 806.0
The remainder is 75 after subtracting 468 from 543.
Take the next digit (1) from the dividend and append it to 75, then repeat: 751 / 78

On to step 6:
If we divide 751 by 78, we get 9 and a remainder of 49.
The next digit of our result is 9. 
Result so far: 8069.0
The remainder is 49 after subtracting 702 from 751.
Since there are no more digits in the dividend, we add a zero to the remainder making it 490, and continue the process.

Let's proceed to step 7:
78 can be fit into 490 6 times, resulting in a remainder of 22.
Put 6 as the next digit of the answer. 
Result so far: 8069.6
Deduct 468 from 490 and we're left with 22.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

Let's proceed to step 8:
When dividing 220 by 78, we get 2 with a remainder of 64.
Put 2 as the next digit of the answer. 
Result so far: 8069.62
Subtracting 156 from 220 leaves us with 64.
Since there are no more digits in the dividend, we add a zero to the remainder making it 640, and continue the process.

Advancing to step 9:
When dividing 640 by 78, we get 8 with a remainder of 16.
Use 8 as the next digit of our solution. 
Result so far: 8069.628
If we take 624 away from 640, we end up with 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Going ahead to step 10:
78 can be fit into 160 2 times, resulting in a remainder of 4.
Record the quotient 2 as the next digit in the result. 
Result so far: 8069.6282
Deduct 156 from 160 and we're left with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Moving on to step 11:
78 goes into 40 0 times with a remainder of 40.
Write down 0 as next digit of the result. 
Result so far: 8069.6282
If we take 0 away from 40, we end up with 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Let's proceed to step 12:
If we divide 400 by 78, we get 5 and a remainder of 10.
Record the quotient 5 as the next digit in the result. 
Result so far: 8069.628205
If we take 390 away from 400, we end up with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Moving on to step 13:
78 goes into 100 1 times with a remainder of 22.
The next digit of our result is 1. 
Result so far: 8069.6282051
Subtract 78 from 100 to get 22.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

Step 14:
78 can be fit into 220 2 times, resulting in a remainder of 64.
Put 2 as the next digit of the answer. 
Result so far: 8069.62820512
If we take 156 away from 220, we end up with 64.
Since there are no more digits in the dividend, we add a zero to the remainder making it 640, and continue the process.

The final outcome is 8069.62820512, with a leftover of 6.4e-08.