We're dividing 39862558 by 948 
We want to figure out the number of times 39862558 can be divided by 948.

Going ahead to step 1:
The number 948 fits into 3 0 times, leaving a remainder of 3.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 3, we get 3.
Grab the next digit (9) from the dividend, add it to 3, then carry on: 39 / 948

Going ahead to step 2:
948 goes into 39 0 times with a remainder of 39.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 39 leaves us with 39.
Fetch the next digit (8) from the dividend, attach it to 39 and continue: 398 / 948

Going ahead to step 3:
948 goes into 398 0 times with a remainder of 398.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 398, we end up with 398.
Include the next digit (6) from the dividend after 398, then repeat: 3986 / 948

Going ahead to step 4:
If we divide 3986 by 948, we get 4 and a remainder of 194.
Write down 4 as next digit of the result. 
Result so far: 4.0
If we take 3792 away from 3986, we end up with 194.
Include the next digit (2) from the dividend after 194, then repeat: 1942 / 948

Advancing to step 5:
When dividing 1942 by 948, we get 2 with a remainder of 46.
Write down 2 as next digit of the result. 
Result so far: 42.0
Deduct 1896 from 1942 and we're left with 46.
Append the next digit (5) from the dividend to 46 and continue with: 465 / 948

Advancing to step 6:
When dividing 465 by 948, we get 0 with a remainder of 465.
The number 0 becomes the next digit in our result. 
Result so far: 420.0
Subtracting 0 from 465 leaves us with 465.
Append the next digit (5) from the dividend to 465 and continue with: 4655 / 948

On to step 7:
The number 948 fits into 4655 4 times, leaving a remainder of 863.
Write down 4 as next digit of the result. 
Result so far: 4204.0
Subtracting 3792 from 4655 leaves us with 863.
Bring next digit (8) of the dividend behind the 863 and repeat the process: 8638 / 948

Moving on to step 8:
948 goes into 8638 9 times with a remainder of 106.
The number 9 becomes the next digit in our result. 
Result so far: 42049.0
The remainder is 106 after subtracting 8532 from 8638.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1060, and continue the process.

Let's proceed to step 9:
The number 948 fits into 1060 1 times, leaving a remainder of 112.
The next digit of our result is 1. 
Result so far: 42049.1
The remainder is 112 after subtracting 948 from 1060.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1120, and continue the process.

Advancing to step 10:
If we divide 1120 by 948, we get 1 and a remainder of 172.
The number 1 becomes the next digit in our result. 
Result so far: 42049.11
Subtract 948 from 1120 to get 172.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1720, and continue the process.

The quotient of the division is 42049.11, and the remainder is 0.172.