Let's divide 415123 by 78
We want to figure out the number of times 415123 can be divided by 78.

On to step 1:
78 can be fit into 4 0 times, resulting in a remainder of 4.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 4, we end up with 4.
Fetch the next digit (1) from the dividend, attach it to 4 and continue: 41 / 78

Let's proceed to step 2:
41 divided by 78 is 0 with a remainder of 41.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 41, we get 41.
Bring next digit (5) of the dividend behind the 41 and repeat the process: 415 / 78

On to step 3:
415 divided by 78 is 5 with a remainder of 25.
Write down 5 as next digit of the result. 
Result so far: 5.0
Subtracting 390 from 415 leaves us with 25.
Include the next digit (1) from the dividend after 25, then repeat: 251 / 78

Going ahead to step 4:
78 can be fit into 251 3 times, resulting in a remainder of 17.
Record the quotient 3 as the next digit in the result. 
Result so far: 53.0
If we take 234 away from 251, we end up with 17.
Append the next digit (2) from the dividend to 17 and continue with: 172 / 78

Let's proceed to step 5:
172 divided by 78 is 2 with a remainder of 16.
Write down 2 as next digit of the result. 
Result so far: 532.0
If we subtract 156 from 172, we get 16.
Grab the next digit (3) from the dividend, add it to 16, then carry on: 163 / 78

Advancing to step 6:
78 goes into 163 2 times with a remainder of 7.
The number 2 becomes the next digit in our result. 
Result so far: 5322.0
If we take 156 away from 163, we end up with 7.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

Advancing to step 7:
The number 78 fits into 70 0 times, leaving a remainder of 70.
Put 0 as the next digit of the answer. 
Result so far: 5322.0
If we take 0 away from 70, we end up with 70.
Since there are no more digits in the dividend, we add a zero to the remainder making it 700, and continue the process.

Moving on to step 8:
If we divide 700 by 78, we get 8 and a remainder of 76.
Use 8 as the next digit of our solution. 
Result so far: 5322.08
Subtracting 624 from 700 leaves us with 76.
Since there are no more digits in the dividend, we add a zero to the remainder making it 760, and continue the process.

Step 9:
The number 78 fits into 760 9 times, leaving a remainder of 58.
Write down 9 as next digit of the result. 
Result so far: 5322.089
The remainder is 58 after subtracting 702 from 760.
Since there are no more digits in the dividend, we add a zero to the remainder making it 580, and continue the process.

Advancing to step 10:
If we divide 580 by 78, we get 7 and a remainder of 34.
Record the quotient 7 as the next digit in the result. 
Result so far: 5322.0897
Deduct 546 from 580 and we're left with 34.
Since there are no more digits in the dividend, we add a zero to the remainder making it 340, and continue the process.

Going ahead to step 11:
When dividing 340 by 78, we get 4 with a remainder of 28.
Use 4 as the next digit of our solution. 
Result so far: 5322.08974
Subtracting 312 from 340 leaves us with 28.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

Advancing to step 12:
78 can be fit into 280 3 times, resulting in a remainder of 46.
Put 3 as the next digit of the answer. 
Result so far: 5322.089743
Subtract 234 from 280 to get 46.
Since there are no more digits in the dividend, we add a zero to the remainder making it 460, and continue the process.

Moving on to step 13:
The number 78 fits into 460 5 times, leaving a remainder of 70.
The next digit of our result is 5. 
Result so far: 5322.0897435
Deduct 390 from 460 and we're left with 70.
Since there are no more digits in the dividend, we add a zero to the remainder making it 700, and continue the process.

Step 14:
78 can be fit into 700 8 times, resulting in a remainder of 76.
Write down 8 as next digit of the result. 
Result so far: 5322.08974358
Subtract 624 from 700 to get 76.
Since there are no more digits in the dividend, we add a zero to the remainder making it 760, and continue the process.

Our division results in 5322.08974358 with a remaining 7.6e-08.