42258741 ÷ 525 
We want to figure out the number of times 42258741 can be divided by 525.

On to step 1:
If we divide 4 by 525, we get 0 and a remainder of 4.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 4 after subtracting 0 from 4.
Include the next digit (2) from the dividend after 4, then repeat: 42 / 525

On to step 2:
525 can be fit into 42 0 times, resulting in a remainder of 42.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 42, we end up with 42.
Append the next digit (2) from the dividend to 42 and continue with: 422 / 525

Step 3:
The number 525 fits into 422 0 times, leaving a remainder of 422.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 422 after subtracting 0 from 422.
Bring next digit (5) of the dividend behind the 422 and repeat the process: 4225 / 525

Advancing to step 4:
525 can be fit into 4225 8 times, resulting in a remainder of 25.
The number 8 becomes the next digit in our result. 
Result so far: 8.0
Deduct 4200 from 4225 and we're left with 25.
Include the next digit (8) from the dividend after 25, then repeat: 258 / 525

Moving on to step 5:
When dividing 258 by 525, we get 0 with a remainder of 258.
Record the quotient 0 as the next digit in the result. 
Result so far: 80.0
Subtract 0 from 258 to get 258.
Include the next digit (7) from the dividend after 258, then repeat: 2587 / 525

On to step 6:
If we divide 2587 by 525, we get 4 and a remainder of 487.
Put 4 as the next digit of the answer. 
Result so far: 804.0
If we take 2100 away from 2587, we end up with 487.
Fetch the next digit (4) from the dividend, attach it to 487 and continue: 4874 / 525

Going ahead to step 7:
525 can be fit into 4874 9 times, resulting in a remainder of 149.
The number 9 becomes the next digit in our result. 
Result so far: 8049.0
Deduct 4725 from 4874 and we're left with 149.
Include the next digit (1) from the dividend after 149, then repeat: 1491 / 525

Let's proceed to step 8:
1491 divided by 525 is 2 with a remainder of 441.
The number 2 becomes the next digit in our result. 
Result so far: 80492.0
If we take 1050 away from 1491, we end up with 441.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4410, and continue the process.

Advancing to step 9:
When dividing 4410 by 525, we get 8 with a remainder of 210.
Record the quotient 8 as the next digit in the result. 
Result so far: 80492.8
The remainder is 210 after subtracting 4200 from 4410.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2100, and continue the process.

Step 10:
525 goes into 2100 4 times with a remainder of 0.
The number 4 becomes the next digit in our result. 
Result so far: 80492.84
If we take 2100 away from 2100, we end up 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.

Moving on to step 11:
525 goes into 0 0 times with a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 80492.84
Subtract 0 from 0 to get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

On to step 12:
0 divided by 525 is 0 with a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 80492.84
Deduct 0 from 0 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.

Our division results in 80492.84 with a remaining 0.0.