We're dividing 566121 by 78 
We want to figure out the number of times 566121 can be divided by 78.

Advancing to step 1:
5 divided by 78 is 0 with a remainder of 5.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 5 to get 5.
Append the next digit (6) from the dividend to 5 and continue with: 56 / 78

Going ahead to step 2:
When dividing 56 by 78, we get 0 with a remainder of 56.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 56 and we're left with 56.
Fetch the next digit (6) from the dividend, attach it to 56 and continue: 566 / 78

Going ahead to step 3:
566 divided by 78 is 7 with a remainder of 20.
Record the quotient 7 as the next digit in the result. 
Result so far: 7.0
If we subtract 546 from 566, we get 20.
Fetch the next digit (1) from the dividend, attach it to 20 and continue: 201 / 78

Let's proceed to step 4:
78 can be fit into 201 2 times, resulting in a remainder of 45.
The next digit of our result is 2. 
Result so far: 72.0
If we take 156 away from 201, we end up with 45.
Append the next digit (2) from the dividend to 45 and continue with: 452 / 78

Step 5:
When dividing 452 by 78, we get 5 with a remainder of 62.
Put 5 as the next digit of the answer. 
Result so far: 725.0
Subtracting 390 from 452 leaves us with 62.
Grab the next digit (1) from the dividend, add it to 62, then carry on: 621 / 78

Going ahead to step 6:
The number 78 fits into 621 7 times, leaving a remainder of 75.
Use 7 as the next digit of our solution. 
Result so far: 7257.0
If we take 546 away from 621, we end up with 75.
Since there are no more digits in the dividend, we add a zero to the remainder making it 750, and continue the process.

Going ahead to step 7:
750 divided by 78 is 9 with a remainder of 48.
Write down 9 as next digit of the result. 
Result so far: 7257.9
Subtracting 702 from 750 leaves us with 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

On to step 8:
78 goes into 480 6 times with a remainder of 12.
The number 6 becomes the next digit in our result. 
Result so far: 7257.96
If we subtract 468 from 480, we get 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Step 9:
120 divided by 78 is 1 with a remainder of 42.
The next digit of our result is 1. 
Result so far: 7257.961
Subtract 78 from 120 to get 42.
Since there are no more digits in the dividend, we add a zero to the remainder making it 420, and continue the process.

Let's proceed to step 10:
78 goes into 420 5 times with a remainder of 30.
The number 5 becomes the next digit in our result. 
Result so far: 7257.9615
If we take 390 away from 420, we end up with 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Moving on to step 11:
300 divided by 78 is 3 with a remainder of 66.
Write down 3 as next digit of the result. 
Result so far: 7257.96153
The remainder is 66 after subtracting 234 from 300.
Since there are no more digits in the dividend, we add a zero to the remainder making it 660, and continue the process.

Let's proceed to step 12:
660 divided by 78 is 8 with a remainder of 36.
Put 8 as the next digit of the answer. 
Result so far: 7257.961538
If we subtract 624 from 660, we get 36.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

On to step 13:
78 goes into 360 4 times with a remainder of 48.
Write down 4 as next digit of the result. 
Result so far: 7257.9615384
If we take 312 away from 360, we end up with 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

Let's proceed to step 14:
The number 78 fits into 480 6 times, leaving a remainder of 12.
Put 6 as the next digit of the answer. 
Result so far: 7257.96153846
Subtracting 468 from 480 leaves us with 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

The final outcome is 7257.96153846, with a leftover of 1.2e-08.