582129 ÷ 78 
We want to figure out the number of times 582129 can be divided by 78.

Advancing to step 1:
If we divide 5 by 78, we get 0 and a remainder of 5.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 5 leaves us with 5.
Fetch the next digit (8) from the dividend, attach it to 5 and continue: 58 / 78

Step 2:
78 can be fit into 58 0 times, resulting in a remainder of 58.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 58, we end up with 58.
Fetch the next digit (2) from the dividend, attach it to 58 and continue: 582 / 78

On to step 3:
When dividing 582 by 78, we get 7 with a remainder of 36.
The number 7 becomes the next digit in our result. 
Result so far: 7.0
Deduct 546 from 582 and we're left with 36.
Bring next digit (1) of the dividend behind the 36 and repeat the process: 361 / 78

On to step 4:
If we divide 361 by 78, we get 4 and a remainder of 49.
Write down 4 as next digit of the result. 
Result so far: 74.0
Subtract 312 from 361 to get 49.
Grab the next digit (2) from the dividend, add it to 49, then carry on: 492 / 78

Advancing to step 5:
492 divided by 78 is 6 with a remainder of 24.
The number 6 becomes the next digit in our result. 
Result so far: 746.0
Subtract 468 from 492 to get 24.
Grab the next digit (9) from the dividend, add it to 24, then carry on: 249 / 78

On to step 6:
78 goes into 249 3 times with a remainder of 15.
Record the quotient 3 as the next digit in the result. 
Result so far: 7463.0
The remainder is 15 after subtracting 234 from 249.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Step 7:
If we divide 150 by 78, we get 1 and a remainder of 72.
Write down 1 as next digit of the result. 
Result so far: 7463.1
If we take 78 away from 150, we end up with 72.
Since there are no more digits in the dividend, we add a zero to the remainder making it 720, and continue the process.

Advancing to step 8:
If we divide 720 by 78, we get 9 and a remainder of 18.
The next digit of our result is 9. 
Result so far: 7463.19
If we subtract 702 from 720, we get 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

Moving on to step 9:
180 divided by 78 is 2 with a remainder of 24.
Record the quotient 2 as the next digit in the result. 
Result so far: 7463.192
If we subtract 156 from 180, we get 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Moving on to step 10:
If we divide 240 by 78, we get 3 and a remainder of 6.
Write down 3 as next digit of the result. 
Result so far: 7463.1923
Subtract 234 from 240 to get 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Moving on to step 11:
The number 78 fits into 60 0 times, leaving a remainder of 60.
The number 0 becomes the next digit in our result. 
Result so far: 7463.1923
Subtract 0 from 60 to get 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

On to step 12:
78 goes into 600 7 times with a remainder of 54.
The next digit of our result is 7. 
Result so far: 7463.192307
If we take 546 away from 600, we end up with 54.
Since there are no more digits in the dividend, we add a zero to the remainder making it 540, and continue the process.

Going ahead to step 13:
78 can be fit into 540 6 times, resulting in a remainder of 72.
Write down 6 as next digit of the result. 
Result so far: 7463.1923076
If we take 468 away from 540, we end up with 72.
Since there are no more digits in the dividend, we add a zero to the remainder making it 720, and continue the process.

Going ahead to step 14:
78 can be fit into 720 9 times, resulting in a remainder of 18.
Use 9 as the next digit of our solution. 
Result so far: 7463.19230769
Subtracting 702 from 720 leaves us with 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

The final outcome is 7463.19230769, with a leftover of 1.8e-08.