3125517 divided by 78 
We want to divide 3125517 by 78.

Step 1:
78 can be fit into 3 0 times, resulting in a remainder of 3.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 3, we end up with 3.
Include the next digit (1) from the dividend after 3, then repeat: 31 / 78

On to step 2:
78 goes into 31 0 times with a remainder of 31.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 31 and we're left with 31.
Grab the next digit (2) from the dividend, add it to 31, then carry on: 312 / 78

Step 3:
78 goes into 312 4 times with a remainder of 0.
The next digit of our result is 4. 
Result so far: 4.0
Subtract 312 from 312 to get 0.
Take the next digit (5) from the dividend and append it to 0, then repeat: 5 / 78

Advancing to step 4:
When dividing 5 by 78, we get 0 with a remainder of 5.
Put 0 as the next digit of the answer. 
Result so far: 40.0
Subtracting 0 from 5 leaves us with 5.
Take the next digit (5) from the dividend and append it to 5, then repeat: 55 / 78

Step 5:
When dividing 55 by 78, we get 0 with a remainder of 55.
Use 0 as the next digit of our solution. 
Result so far: 400.0
If we take 0 away from 55, we end up with 55.
Fetch the next digit (1) from the dividend, attach it to 55 and continue: 551 / 78

Going ahead to step 6:
When dividing 551 by 78, we get 7 with a remainder of 5.
Record the quotient 7 as the next digit in the result. 
Result so far: 4007.0
The remainder is 5 after subtracting 546 from 551.
Fetch the next digit (7) from the dividend, attach it to 5 and continue: 57 / 78

Moving on to step 7:
78 goes into 57 0 times with a remainder of 57.
Write down 0 as next digit of the result. 
Result so far: 40070.0
If we subtract 0 from 57, we get 57.
Since there are no more digits in the dividend, we add a zero to the remainder making it 570, and continue the process.

Step 8:
78 can be fit into 570 7 times, resulting in a remainder of 24.
Record the quotient 7 as the next digit in the result. 
Result so far: 40070.7
Subtract 546 from 570 to 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.

Step 9:
If we divide 240 by 78, we get 3 and a remainder of 6.
Record the quotient 3 as the next digit in the result. 
Result so far: 40070.73
Subtracting 234 from 240 leaves us with 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Advancing to step 10:
78 can be fit into 60 0 times, resulting in a remainder of 60.
The number 0 becomes the next digit in our result. 
Result so far: 40070.73
Deduct 0 from 60 and we're left with 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

Going ahead to step 11:
When dividing 600 by 78, we get 7 with a remainder of 54.
Put 7 as the next digit of the answer. 
Result so far: 40070.7307
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.

Moving on to step 12:
78 can be fit into 540 6 times, resulting in a remainder of 72.
Put 6 as the next digit of the answer. 
Result so far: 40070.73076
Deduct 468 from 540 and we're left 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.

Step 13:
The number 78 fits into 720 9 times, leaving a remainder of 18.
Use 9 as the next digit of our solution. 
Result so far: 40070.730769
The remainder is 18 after subtracting 702 from 720.
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 14:
180 divided by 78 is 2 with a remainder of 24.
The next digit of our result is 2. 
Result so far: 40070.7307692
Subtracting 156 from 180 leaves us with 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Advancing to step 15:
240 divided by 78 is 3 with a remainder of 6.
Write down 3 as next digit of the result. 
Result so far: 40070.73076923
If we take 234 away from 240, we end up with 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Our division results in 40070.73076923 with a remaining 6e-09.