644798 divided by 78 
Let's see how many times 78 fits into 644798.

Advancing to step 1:
78 goes into 6 0 times with a remainder of 6.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 6 and we're left with 6.
Include the next digit (4) from the dividend after 6, then repeat: 64 / 78

On to step 2:
64 divided by 78 is 0 with a remainder of 64.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 64 to get 64.
Take the next digit (4) from the dividend and append it to 64, then repeat: 644 / 78

Moving on to step 3:
If we divide 644 by 78, we get 8 and a remainder of 20.
The number 8 becomes the next digit in our result. 
Result so far: 8.0
Deduct 624 from 644 and we're left with 20.
Bring next digit (7) of the dividend behind the 20 and repeat the process: 207 / 78

Let's proceed to step 4:
207 divided by 78 is 2 with a remainder of 51.
Write down 2 as next digit of the result. 
Result so far: 82.0
If we take 156 away from 207, we end up with 51.
Grab the next digit (9) from the dividend, add it to 51, then carry on: 519 / 78

Let's proceed to step 5:
The number 78 fits into 519 6 times, leaving a remainder of 51.
The next digit of our result is 6. 
Result so far: 826.0
Deduct 468 from 519 and we're left with 51.
Grab the next digit (8) from the dividend, add it to 51, then carry on: 518 / 78

Step 6:
78 can be fit into 518 6 times, resulting in a remainder of 50.
The number 6 becomes the next digit in our result. 
Result so far: 8266.0
The remainder is 50 after subtracting 468 from 518.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Going ahead to step 7:
500 divided by 78 is 6 with a remainder of 32.
The number 6 becomes the next digit in our result. 
Result so far: 8266.6
If we subtract 468 from 500, we get 32.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

Let's proceed to step 8:
78 goes into 320 4 times with a remainder of 8.
The number 4 becomes the next digit in our result. 
Result so far: 8266.64
Subtracting 312 from 320 leaves us with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Let's proceed to step 9:
If we divide 80 by 78, we get 1 and a remainder of 2.
Put 1 as the next digit of the answer. 
Result so far: 8266.641
Subtract 78 from 80 to get 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

On to step 10:
78 goes into 20 0 times with a remainder of 20.
Write down 0 as next digit of the result. 
Result so far: 8266.641
The remainder is 20 after subtracting 0 from 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Going ahead to step 11:
When dividing 200 by 78, we get 2 with a remainder of 44.
Use 2 as the next digit of our solution. 
Result so far: 8266.64102
If we take 156 away from 200, we end up with 44.
Since there are no more digits in the dividend, we add a zero to the remainder making it 440, and continue the process.

Let's proceed to step 12:
78 goes into 440 5 times with a remainder of 50.
The number 5 becomes the next digit in our result. 
Result so far: 8266.641025
If we take 390 away from 440, we end up with 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Going ahead to step 13:
If we divide 500 by 78, we get 6 and a remainder of 32.
Record the quotient 6 as the next digit in the result. 
Result so far: 8266.6410256
The remainder is 32 after subtracting 468 from 500.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

Going ahead to step 14:
The number 78 fits into 320 4 times, leaving a remainder of 8.
Write down 4 as next digit of the result. 
Result so far: 8266.64102564
Subtracting 312 from 320 leaves us with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Our division results in 8266.64102564 with a remaining 8e-09.