We look at the division of 42858265 by 807 
We're looking to find how many times 807 goes into 42858265.

Step 1:
If we divide 4 by 807, we get 0 and a remainder of 4.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 4 to get 4.
Fetch the next digit (2) from the dividend, attach it to 4 and continue: 42 / 807

On to step 2:
807 goes into 42 0 times with a remainder of 42.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 42 and we're left with 42.
Bring next digit (8) of the dividend behind the 42 and repeat the process: 428 / 807

On to step 3:
When dividing 428 by 807, we get 0 with a remainder of 428.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 428, we end up with 428.
Fetch the next digit (5) from the dividend, attach it to 428 and continue: 4285 / 807

Advancing to step 4:
The number 807 fits into 4285 5 times, leaving a remainder of 250.
Put 5 as the next digit of the answer. 
Result so far: 5.0
The remainder is 250 after subtracting 4035 from 4285.
Fetch the next digit (8) from the dividend, attach it to 250 and continue: 2508 / 807

On to step 5:
807 can be fit into 2508 3 times, resulting in a remainder of 87.
Use 3 as the next digit of our solution. 
Result so far: 53.0
Deduct 2421 from 2508 and we're left with 87.
Take the next digit (2) from the dividend and append it to 87, then repeat: 872 / 807

Going ahead to step 6:
If we divide 872 by 807, we get 1 and a remainder of 65.
Put 1 as the next digit of the answer. 
Result so far: 531.0
Deduct 807 from 872 and we're left with 65.
Take the next digit (6) from the dividend and append it to 65, then repeat: 656 / 807

Let's proceed to step 7:
807 goes into 656 0 times with a remainder of 656.
The next digit of our result is 0. 
Result so far: 5310.0
If we take 0 away from 656, we end up with 656.
Include the next digit (5) from the dividend after 656, then repeat: 6565 / 807

Moving on to step 8:
807 can be fit into 6565 8 times, resulting in a remainder of 109.
Record the quotient 8 as the next digit in the result. 
Result so far: 53108.0
If we subtract 6456 from 6565, we get 109.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1090, and continue the process.

Step 9:
807 can be fit into 1090 1 times, resulting in a remainder of 283.
Write down 1 as next digit of the result. 
Result so far: 53108.1
Deduct 807 from 1090 and we're left with 283.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2830, and continue the process.

Step 10:
The number 807 fits into 2830 3 times, leaving a remainder of 409.
Put 3 as the next digit of the answer. 
Result so far: 53108.13
If we subtract 2421 from 2830, we get 409.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4090, and continue the process.

Step 11:
807 can be fit into 4090 5 times, resulting in a remainder of 55.
Use 5 as the next digit of our solution. 
Result so far: 53108.135
If we subtract 4035 from 4090, we get 55.
Since there are no more digits in the dividend, we add a zero to the remainder making it 550, and continue the process.

On to step 12:
807 can be fit into 550 0 times, resulting in a remainder of 550.
Put 0 as the next digit of the answer. 
Result so far: 53108.135
Subtracting 0 from 550 leaves us with 550.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5500, and continue the process.

Advancing to step 13:
807 goes into 5500 6 times with a remainder of 658.
Record the quotient 6 as the next digit in the result. 
Result so far: 53108.13506
The remainder is 658 after subtracting 4842 from 5500.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6580, and continue the process.

Going ahead to step 14:
807 goes into 6580 8 times with a remainder of 124.
Record the quotient 8 as the next digit in the result. 
Result so far: 53108.135068
Subtract 6456 from 6580 to get 124.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1240, and continue the process.

Going ahead to step 15:
When dividing 1240 by 807, we get 1 with a remainder of 433.
The next digit of our result is 1. 
Result so far: 53108.1350681
The remainder is 433 after subtracting 807 from 1240.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4330, and continue the process.

Step 16:
807 goes into 4330 5 times with a remainder of 295.
Write down 5 as next digit of the result. 
Result so far: 53108.13506815
If we subtract 4035 from 4330, we get 295.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2950, and continue the process.

After the division, we end up with 53108.13506815 and a remainder of 2.95e-07.