42987 divided by 78 
We want to divide 42987 by 78.

Moving on to step 1:
If we divide 4 by 78, we get 0 and a remainder of 4.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 4, we get 4.
Take the next digit (2) from the dividend and append it to 4, then repeat: 42 / 78

Moving on to step 2:
The number 78 fits into 42 0 times, leaving a remainder of 42.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 42, we end up with 42.
Append the next digit (9) from the dividend to 42 and continue with: 429 / 78

Step 3:
78 can be fit into 429 5 times, resulting in a remainder of 39.
The number 5 becomes the next digit in our result. 
Result so far: 5.0
The remainder is 39 after subtracting 390 from 429.
Bring next digit (8) of the dividend behind the 39 and repeat the process: 398 / 78

Going ahead to step 4:
When dividing 398 by 78, we get 5 with a remainder of 8.
Put 5 as the next digit of the answer. 
Result so far: 55.0
If we take 390 away from 398, we end up with 8.
Include the next digit (7) from the dividend after 8, then repeat: 87 / 78

Let's proceed to step 5:
78 can be fit into 87 1 times, resulting in a remainder of 9.
Record the quotient 1 as the next digit in the result. 
Result so far: 551.0
Subtracting 78 from 87 leaves us with 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

Advancing to step 6:
If we divide 90 by 78, we get 1 and a remainder of 12.
Use 1 as the next digit of our solution. 
Result so far: 551.1
Subtracting 78 from 90 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.

Advancing to step 7:
The number 78 fits into 120 1 times, leaving a remainder of 42.
Use 1 as the next digit of our solution. 
Result so far: 551.11
Subtracting 78 from 120 leaves us with 42.
Since there are no more digits in the dividend, we add a zero to the remainder making it 420, and continue the process.

In conclusion, the division gives 551.11 with a balance of 0.042.