We look at the division of 42468942 by 13 
Let's see how many times 13 fits into 42468942.

Let's proceed to step 1:
When dividing 4 by 13, we get 0 with a remainder of 4.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 4 leaves us with 4.
Fetch the next digit (2) from the dividend, attach it to 4 and continue: 42 / 13

Step 2:
When dividing 42 by 13, we get 3 with a remainder of 3.
The number 3 becomes the next digit in our result. 
Result so far: 3.0
The remainder is 3 after subtracting 39 from 42.
Include the next digit (4) from the dividend after 3, then repeat: 34 / 13

On to step 3:
34 divided by 13 is 2 with a remainder of 8.
Use 2 as the next digit of our solution. 
Result so far: 32.0
Subtracting 26 from 34 leaves us with 8.
Include the next digit (6) from the dividend after 8, then repeat: 86 / 13

On to step 4:
When dividing 86 by 13, we get 6 with a remainder of 8.
Use 6 as the next digit of our solution. 
Result so far: 326.0
Subtracting 78 from 86 leaves us with 8.
Fetch the next digit (8) from the dividend, attach it to 8 and continue: 88 / 13

Step 5:
The number 13 fits into 88 6 times, leaving a remainder of 10.
The next digit of our result is 6. 
Result so far: 3266.0
Deduct 78 from 88 and we're left with 10.
Take the next digit (9) from the dividend and append it to 10, then repeat: 109 / 13

Let's proceed to step 6:
109 divided by 13 is 8 with a remainder of 5.
Record the quotient 8 as the next digit in the result. 
Result so far: 32668.0
If we take 104 away from 109, we end up with 5.
Grab the next digit (4) from the dividend, add it to 5, then carry on: 54 / 13

Moving on to step 7:
13 goes into 54 4 times with a remainder of 2.
Write down 4 as next digit of the result. 
Result so far: 326684.0
Deduct 52 from 54 and we're left with 2.
Fetch the next digit (2) from the dividend, attach it to 2 and continue: 22 / 13

Advancing to step 8:
13 goes into 22 1 times with a remainder of 9.
The number 1 becomes the next digit in our result. 
Result so far: 3266841.0
If we take 13 away from 22, we end up 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:
When dividing 90 by 13, we get 6 with a remainder of 12.
Record the quotient 6 as the next digit in the result. 
Result so far: 3266841.6
If we take 78 away from 90, we end up 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.

On to step 10:
120 divided by 13 is 9 with a remainder of 3.
The next digit of our result is 9. 
Result so far: 3266841.69
Deduct 117 from 120 and we're left with 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Advancing to step 11:
The number 13 fits into 30 2 times, leaving a remainder of 4.
The number 2 becomes the next digit in our result. 
Result so far: 3266841.692
If we take 26 away from 30, we end up with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

On to step 12:
If we divide 40 by 13, we get 3 and a remainder of 1.
Record the quotient 3 as the next digit in the result. 
Result so far: 3266841.6923
Subtract 39 from 40 to get 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Going ahead to step 13:
When dividing 10 by 13, we get 0 with a remainder of 10.
The next digit of our result is 0. 
Result so far: 3266841.6923
If we take 0 away from 10, we end up with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

On to step 14:
When dividing 100 by 13, we get 7 with a remainder of 9.
Put 7 as the next digit of the answer. 
Result so far: 3266841.692307
If we take 91 away from 100, we end up 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.

Let's proceed to step 15:
13 goes into 90 6 times with a remainder of 12.
Record the quotient 6 as the next digit in the result. 
Result so far: 3266841.6923076
If we subtract 78 from 90, we get 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Let's proceed to step 16:
120 divided by 13 is 9 with a remainder of 3.
The next digit of our result is 9. 
Result so far: 3266841.69230769
The remainder is 3 after subtracting 117 from 120.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

After the division, we end up with 3266841.69230769 and a remainder of 3e-09.