We divide 851511 by 42
We're looking to find how many times 42 goes into 851511.

On to step 1:
42 can be fit into 8 0 times, resulting in a remainder of 8.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 8 leaves us with 8.
Take the next digit (5) from the dividend and append it to 8, then repeat: 85 / 42

Step 2:
When dividing 85 by 42, we get 2 with a remainder of 1.
The number 2 becomes the next digit in our result. 
Result so far: 2.0
If we subtract 84 from 85, we get 1.
Append the next digit (1) from the dividend to 1 and continue with: 11 / 42

Step 3:
42 goes into 11 0 times with a remainder of 11.
Record the quotient 0 as the next digit in the result. 
Result so far: 20.0
Subtracting 0 from 11 leaves us with 11.
Fetch the next digit (5) from the dividend, attach it to 11 and continue: 115 / 42

Going ahead to step 4:
42 can be fit into 115 2 times, resulting in a remainder of 31.
Use 2 as the next digit of our solution. 
Result so far: 202.0
If we take 84 away from 115, we end up with 31.
Bring next digit (1) of the dividend behind the 31 and repeat the process: 311 / 42

Moving on to step 5:
311 divided by 42 is 7 with a remainder of 17.
The number 7 becomes the next digit in our result. 
Result so far: 2027.0
If we subtract 294 from 311, we get 17.
Include the next digit (1) from the dividend after 17, then repeat: 171 / 42

Advancing to step 6:
The number 42 fits into 171 4 times, leaving a remainder of 3.
Write down 4 as next digit of the result. 
Result so far: 20274.0
Subtracting 168 from 171 leaves us 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.

Let's proceed to step 7:
If we divide 30 by 42, we get 0 and a remainder of 30.
Write down 0 as next digit of the result. 
Result so far: 20274.0
Subtract 0 from 30 to get 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Going ahead to step 8:
300 divided by 42 is 7 with a remainder of 6.
Record the quotient 7 as the next digit in the result. 
Result so far: 20274.07
Subtract 294 from 300 to get 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Step 9:
42 goes into 60 1 times with a remainder of 18.
The number 1 becomes the next digit in our result. 
Result so far: 20274.071
Deduct 42 from 60 and we're left with 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

Going ahead to step 10:
When dividing 180 by 42, we get 4 with a remainder of 12.
The next digit of our result is 4. 
Result so far: 20274.0714
Subtracting 168 from 180 leaves us 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.

Step 11:
If we divide 120 by 42, we get 2 and a remainder of 36.
The number 2 becomes the next digit in our result. 
Result so far: 20274.07142
If we subtract 84 from 120, we get 36.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

On to step 12:
The number 42 fits into 360 8 times, leaving a remainder of 24.
The next digit of our result is 8. 
Result so far: 20274.071428
Subtract 336 from 360 to get 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Moving on to step 13:
240 divided by 42 is 5 with a remainder of 30.
The next digit of our result is 5. 
Result so far: 20274.0714285
If we take 210 away from 240, we end up with 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Step 14:
42 goes into 300 7 times with a remainder of 6.
The number 7 becomes the next digit in our result. 
Result so far: 20274.07142857
The remainder is 6 after subtracting 294 from 300.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Our division results in 20274.07142857 with a remaining 6e-09.