We divide 40215300 by 78
We're looking to find how many times 78 goes into 40215300.

Step 1:
78 goes into 4 0 times with a remainder of 4.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 4, we get 4.
Bring next digit (0) of the dividend behind the 4 and repeat the process: 40 / 78

Moving on to step 2:
The number 78 fits into 40 0 times, leaving a remainder of 40.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 40 and we're left with 40.
Grab the next digit (2) from the dividend, add it to 40, then carry on: 402 / 78

Moving on to step 3:
If we divide 402 by 78, we get 5 and a remainder of 12.
Use 5 as the next digit of our solution. 
Result so far: 5.0
Deduct 390 from 402 and we're left with 12.
Bring next digit (1) of the dividend behind the 12 and repeat the process: 121 / 78

Let's proceed to step 4:
The number 78 fits into 121 1 times, leaving a remainder of 43.
Write down 1 as next digit of the result. 
Result so far: 51.0
If we take 78 away from 121, we end up with 43.
Append the next digit (5) from the dividend to 43 and continue with: 435 / 78

On to step 5:
78 goes into 435 5 times with a remainder of 45.
The number 5 becomes the next digit in our result. 
Result so far: 515.0
If we take 390 away from 435, we end up with 45.
Take the next digit (3) from the dividend and append it to 45, then repeat: 453 / 78

Step 6:
If we divide 453 by 78, we get 5 and a remainder of 63.
The next digit of our result is 5. 
Result so far: 5155.0
Subtracting 390 from 453 leaves us with 63.
Bring next digit (0) of the dividend behind the 63 and repeat the process: 630 / 78

Let's proceed to step 7:
The number 78 fits into 630 8 times, leaving a remainder of 6.
Record the quotient 8 as the next digit in the result. 
Result so far: 51558.0
Subtracting 624 from 630 leaves us with 6.
Grab the next digit (0) from the dividend, add it to 6, then carry on: 60 / 78

Going ahead to step 8:
The number 78 fits into 60 0 times, leaving a remainder of 60.
Record the quotient 0 as the next digit in the result. 
Result so far: 515580.0
Subtracting 0 from 60 leaves us 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.

Advancing to step 9:
78 can be fit into 600 7 times, resulting in a remainder of 54.
Use 7 as the next digit of our solution. 
Result so far: 515580.7
Subtracting 546 from 600 leaves us 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.

Step 10:
When dividing 540 by 78, we get 6 with a remainder of 72.
Put 6 as the next digit of the answer. 
Result so far: 515580.76
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.

On to step 11:
78 goes into 720 9 times with a remainder of 18.
Record the quotient 9 as the next digit in the result. 
Result so far: 515580.769
Subtract 702 from 720 to 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 12:
78 goes into 180 2 times with a remainder of 24.
The number 2 becomes the next digit in our result. 
Result so far: 515580.7692
The remainder is 24 after subtracting 156 from 180.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

On to step 13:
240 divided by 78 is 3 with a remainder of 6.
The next digit of our result is 3. 
Result so far: 515580.76923
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.

On to step 14:
60 divided by 78 is 0 with a remainder of 60.
Record the quotient 0 as the next digit in the result. 
Result so far: 515580.76923
If we take 0 away from 60, we end up 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.

Advancing to step 15:
The number 78 fits into 600 7 times, leaving a remainder of 54.
The next digit of our result is 7. 
Result so far: 515580.7692307
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.

Step 16:
The number 78 fits into 540 6 times, leaving a remainder of 72.
Put 6 as the next digit of the answer. 
Result so far: 515580.76923076
Subtracting 468 from 540 leaves us 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.

After the division, we end up with 515580.76923076 and a remainder of 7.2e-08.