42543417 ÷ 124 
Our goal is to divide 42543417 by 124.

On to step 1:
4 divided by 124 is 0 with a remainder of 4.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 4, we get 4.
Fetch the next digit (2) from the dividend, attach it to 4 and continue: 42 / 124

Step 2:
124 goes into 42 0 times with a remainder of 42.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 42 and we're left with 42.
Bring next digit (5) of the dividend behind the 42 and repeat the process: 425 / 124

Step 3:
If we divide 425 by 124, we get 3 and a remainder of 53.
Use 3 as the next digit of our solution. 
Result so far: 3.0
The remainder is 53 after subtracting 372 from 425.
Bring next digit (4) of the dividend behind the 53 and repeat the process: 534 / 124

Moving on to step 4:
The number 124 fits into 534 4 times, leaving a remainder of 38.
Use 4 as the next digit of our solution. 
Result so far: 34.0
Subtracting 496 from 534 leaves us with 38.
Grab the next digit (3) from the dividend, add it to 38, then carry on: 383 / 124

Going ahead to step 5:
383 divided by 124 is 3 with a remainder of 11.
Put 3 as the next digit of the answer. 
Result so far: 343.0
If we subtract 372 from 383, we get 11.
Include the next digit (4) from the dividend after 11, then repeat: 114 / 124

Moving on to step 6:
When dividing 114 by 124, we get 0 with a remainder of 114.
Record the quotient 0 as the next digit in the result. 
Result so far: 3430.0
If we take 0 away from 114, we end up with 114.
Grab the next digit (1) from the dividend, add it to 114, then carry on: 1141 / 124

Moving on to step 7:
124 goes into 1141 9 times with a remainder of 25.
Put 9 as the next digit of the answer. 
Result so far: 34309.0
If we subtract 1116 from 1141, we get 25.
Fetch the next digit (7) from the dividend, attach it to 25 and continue: 257 / 124

On to step 8:
When dividing 257 by 124, we get 2 with a remainder of 9.
Record the quotient 2 as the next digit in the result. 
Result so far: 343092.0
Subtracting 248 from 257 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.

Going ahead to step 9:
124 can be fit into 90 0 times, resulting in a remainder of 90.
Record the quotient 0 as the next digit in the result. 
Result so far: 343092.0
Subtract 0 from 90 to get 90.
Since there are no more digits in the dividend, we add a zero to the remainder making it 900, and continue the process.

Moving on to step 10:
When dividing 900 by 124, we get 7 with a remainder of 32.
Write down 7 as next digit of the result. 
Result so far: 343092.07
If we take 868 away from 900, we end up with 32.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

Going ahead to step 11:
320 divided by 124 is 2 with a remainder of 72.
Put 2 as the next digit of the answer. 
Result so far: 343092.072
The remainder is 72 after subtracting 248 from 320.
Since there are no more digits in the dividend, we add a zero to the remainder making it 720, and continue the process.

Going ahead to step 12:
The number 124 fits into 720 5 times, leaving a remainder of 100.
The number 5 becomes the next digit in our result. 
Result so far: 343092.0725
If we take 620 away from 720, we end up with 100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1000, and continue the process.

Advancing to step 13:
If we divide 1000 by 124, we get 8 and a remainder of 8.
Record the quotient 8 as the next digit in the result. 
Result so far: 343092.07258
If we take 992 away from 1000, we end up with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Let's proceed to step 14:
The number 124 fits into 80 0 times, leaving a remainder of 80.
Write down 0 as next digit of the result. 
Result so far: 343092.07258
The remainder is 80 after subtracting 0 from 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

Going ahead to step 15:
124 goes into 800 6 times with a remainder of 56.
Write down 6 as next digit of the result. 
Result so far: 343092.0725806
If we subtract 744 from 800, we get 56.
Since there are no more digits in the dividend, we add a zero to the remainder making it 560, and continue the process.

On to step 16:
560 divided by 124 is 4 with a remainder of 64.
Use 4 as the next digit of our solution. 
Result so far: 343092.07258064
If we subtract 496 from 560, we get 64.
Since there are no more digits in the dividend, we add a zero to the remainder making it 640, and continue the process.

Our division results in 343092.07258064 with a remaining 6.4e-08.