42975519 divided by 78 
We want to divide 42975519 by 78.

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
The remainder is 4 after subtracting 0 from 4.
Fetch the next digit (2) from the dividend, attach it to 4 and continue: 42 / 78

Let's proceed to step 2:
78 goes into 42 0 times with a remainder of 42.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 42, we end up with 42.
Grab the next digit (9) from the dividend, add it to 42, then carry on: 429 / 78

Step 3:
The number 78 fits into 429 5 times, leaving a remainder of 39.
Use 5 as the next digit of our solution. 
Result so far: 5.0
If we subtract 390 from 429, we get 39.
Take the next digit (7) from the dividend and append it to 39, then repeat: 397 / 78

Moving on to step 4:
78 goes into 397 5 times with a remainder of 7.
Put 5 as the next digit of the answer. 
Result so far: 55.0
If we subtract 390 from 397, we get 7.
Append the next digit (5) from the dividend to 7 and continue with: 75 / 78

Step 5:
75 divided by 78 is 0 with a remainder of 75.
The number 0 becomes the next digit in our result. 
Result so far: 550.0
The remainder is 75 after subtracting 0 from 75.
Grab the next digit (5) from the dividend, add it to 75, then carry on: 755 / 78

Moving on to step 6:
78 can be fit into 755 9 times, resulting in a remainder of 53.
Record the quotient 9 as the next digit in the result. 
Result so far: 5509.0
The remainder is 53 after subtracting 702 from 755.
Bring next digit (1) of the dividend behind the 53 and repeat the process: 531 / 78

On to step 7:
78 goes into 531 6 times with a remainder of 63.
The number 6 becomes the next digit in our result. 
Result so far: 55096.0
Subtracting 468 from 531 leaves us with 63.
Append the next digit (9) from the dividend to 63 and continue with: 639 / 78

Moving on to step 8:
639 divided by 78 is 8 with a remainder of 15.
The number 8 becomes the next digit in our result. 
Result so far: 550968.0
If we subtract 624 from 639, we get 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Advancing to step 9:
78 goes into 150 1 times with a remainder of 72.
Record the quotient 1 as the next digit in the result. 
Result so far: 550968.1
The remainder is 72 after subtracting 78 from 150.
Since there are no more digits in the dividend, we add a zero to the remainder making it 720, and continue the process.

Let's proceed to step 10:
720 divided by 78 is 9 with a remainder of 18.
Put 9 as the next digit of the answer. 
Result so far: 550968.19
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.

Let's proceed to step 11:
180 divided by 78 is 2 with a remainder of 24.
The number 2 becomes the next digit in our result. 
Result so far: 550968.192
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.

Moving on to step 12:
240 divided by 78 is 3 with a remainder of 6.
Use 3 as the next digit of our solution. 
Result so far: 550968.1923
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.

Step 13:
60 divided by 78 is 0 with a remainder of 60.
Use 0 as the next digit of our solution. 
Result so far: 550968.1923
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.

Step 14:
78 goes into 600 7 times with a remainder of 54.
The number 7 becomes the next digit in our result. 
Result so far: 550968.192307
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 15:
78 can be fit into 540 6 times, resulting in a remainder of 72.
Record the quotient 6 as the next digit in the result. 
Result so far: 550968.1923076
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.

Let's proceed to step 16:
When dividing 720 by 78, we get 9 with a remainder of 18.
The next digit of our result is 9. 
Result so far: 550968.19230769
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.

The final outcome is 550968.19230769, with a leftover of 1.8e-08.