We look at the division of 42420475 by 128 
We want to figure out the number of times 42420475 can be divided by 128.

On to step 1:
When dividing 4 by 128, we get 0 with 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.
Include the next digit (2) from the dividend after 4, then repeat: 42 / 128

Going ahead to step 2:
128 can be fit into 42 0 times, resulting in a remainder of 42.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 42, we end up with 42.
Bring next digit (4) of the dividend behind the 42 and repeat the process: 424 / 128

On to step 3:
The number 128 fits into 424 3 times, leaving a remainder of 40.
Record the quotient 3 as the next digit in the result. 
Result so far: 3.0
Subtracting 384 from 424 leaves us with 40.
Fetch the next digit (2) from the dividend, attach it to 40 and continue: 402 / 128

Step 4:
When dividing 402 by 128, we get 3 with a remainder of 18.
Put 3 as the next digit of the answer. 
Result so far: 33.0
If we take 384 away from 402, we end up with 18.
Bring next digit (0) of the dividend behind the 18 and repeat the process: 180 / 128

On to step 5:
128 can be fit into 180 1 times, resulting in a remainder of 52.
Use 1 as the next digit of our solution. 
Result so far: 331.0
Subtracting 128 from 180 leaves us with 52.
Include the next digit (4) from the dividend after 52, then repeat: 524 / 128

Step 6:
128 goes into 524 4 times with a remainder of 12.
Record the quotient 4 as the next digit in the result. 
Result so far: 3314.0
Subtracting 512 from 524 leaves us with 12.
Bring next digit (7) of the dividend behind the 12 and repeat the process: 127 / 128

Let's proceed to step 7:
The number 128 fits into 127 0 times, leaving a remainder of 127.
Use 0 as the next digit of our solution. 
Result so far: 33140.0
If we take 0 away from 127, we end up with 127.
Take the next digit (5) from the dividend and append it to 127, then repeat: 1275 / 128

Let's proceed to step 8:
128 goes into 1275 9 times with a remainder of 123.
Use 9 as the next digit of our solution. 
Result so far: 331409.0
Subtract 1152 from 1275 to get 123.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1230, and continue the process.

Going ahead to step 9:
128 goes into 1230 9 times with a remainder of 78.
The next digit of our result is 9. 
Result so far: 331409.9
Subtract 1152 from 1230 to get 78.
Since there are no more digits in the dividend, we add a zero to the remainder making it 780, and continue the process.

Step 10:
128 can be fit into 780 6 times, resulting in a remainder of 12.
Write down 6 as next digit of the result. 
Result so far: 331409.96
If we subtract 768 from 780, 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.

Moving on to step 11:
The number 128 fits into 120 0 times, leaving a remainder of 120.
The number 0 becomes the next digit in our result. 
Result so far: 331409.96
If we take 0 away from 120, we end up with 120.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1200, and continue the process.

Going ahead to step 12:
128 can be fit into 1200 9 times, resulting in a remainder of 48.
Use 9 as the next digit of our solution. 
Result so far: 331409.9609
If we subtract 1152 from 1200, we get 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

Let's proceed to step 13:
The number 128 fits into 480 3 times, leaving a remainder of 96.
The number 3 becomes the next digit in our result. 
Result so far: 331409.96093
Deduct 384 from 480 and we're left with 96.
Since there are no more digits in the dividend, we add a zero to the remainder making it 960, and continue the process.

Advancing to step 14:
128 goes into 960 7 times with a remainder of 64.
The number 7 becomes the next digit in our result. 
Result so far: 331409.960937
If we take 896 away from 960, we end up with 64.
Since there are no more digits in the dividend, we add a zero to the remainder making it 640, and continue the process.

Going ahead to step 15:
128 can be fit into 640 5 times, resulting in a remainder of 0.
Write down 5 as next digit of the result. 
Result so far: 331409.9609375
Deduct 640 from 640 and we're left with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Advancing to step 16:
0 divided by 128 is 0 with a remainder of 0.
The next digit of our result is 0. 
Result so far: 331409.9609375
Subtracting 0 from 0 leaves us with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

The final outcome is 331409.9609375, with a leftover of 0.0.