We look at the division of 51235287 by 850 
We want to figure out the number of times 51235287 can be divided by 850.

Advancing to step 1:
If we divide 5 by 850, we get 0 and a remainder of 5.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 5, we end up with 5.
Append the next digit (1) from the dividend to 5 and continue with: 51 / 850

Moving on to step 2:
The number 850 fits into 51 0 times, leaving a remainder of 51.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 51 leaves us with 51.
Include the next digit (2) from the dividend after 51, then repeat: 512 / 850

Advancing to step 3:
The number 850 fits into 512 0 times, leaving a remainder of 512.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 512, we get 512.
Take the next digit (3) from the dividend and append it to 512, then repeat: 5123 / 850

On to step 4:
5123 divided by 850 is 6 with a remainder of 23.
The number 6 becomes the next digit in our result. 
Result so far: 6.0
Subtracting 5100 from 5123 leaves us with 23.
Append the next digit (5) from the dividend to 23 and continue with: 235 / 850

Advancing to step 5:
235 divided by 850 is 0 with a remainder of 235.
Write down 0 as next digit of the result. 
Result so far: 60.0
The remainder is 235 after subtracting 0 from 235.
Include the next digit (2) from the dividend after 235, then repeat: 2352 / 850

Let's proceed to step 6:
The number 850 fits into 2352 2 times, leaving a remainder of 652.
Record the quotient 2 as the next digit in the result. 
Result so far: 602.0
Deduct 1700 from 2352 and we're left with 652.
Grab the next digit (8) from the dividend, add it to 652, then carry on: 6528 / 850

On to step 7:
The number 850 fits into 6528 7 times, leaving a remainder of 578.
The next digit of our result is 7. 
Result so far: 6027.0
Deduct 5950 from 6528 and we're left with 578.
Take the next digit (7) from the dividend and append it to 578, then repeat: 5787 / 850

Moving on to step 8:
When dividing 5787 by 850, we get 6 with a remainder of 687.
Record the quotient 6 as the next digit in the result. 
Result so far: 60276.0
Subtract 5100 from 5787 to get 687.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6870, and continue the process.

Moving on to step 9:
The number 850 fits into 6870 8 times, leaving a remainder of 70.
Use 8 as the next digit of our solution. 
Result so far: 60276.8
Subtracting 6800 from 6870 leaves us with 70.
Since there are no more digits in the dividend, we add a zero to the remainder making it 700, and continue the process.

Step 10:
850 goes into 700 0 times with a remainder of 700.
The number 0 becomes the next digit in our result. 
Result so far: 60276.8
The remainder is 700 after subtracting 0 from 700.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7000, and continue the process.

Step 11:
If we divide 7000 by 850, we get 8 and a remainder of 200.
The next digit of our result is 8. 
Result so far: 60276.808
Subtract 6800 from 7000 to get 200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2000, and continue the process.

Going ahead to step 12:
850 goes into 2000 2 times with a remainder of 300.
The next digit of our result is 2. 
Result so far: 60276.8082
If we take 1700 away from 2000, we end up with 300.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3000, and continue the process.

On to step 13:
850 can be fit into 3000 3 times, resulting in a remainder of 450.
Write down 3 as next digit of the result. 
Result so far: 60276.80823
If we take 2550 away from 3000, we end up with 450.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4500, and continue the process.

Step 14:
4500 divided by 850 is 5 with a remainder of 250.
The next digit of our result is 5. 
Result so far: 60276.808235
Subtracting 4250 from 4500 leaves us with 250.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2500, and continue the process.

Going ahead to step 15:
850 can be fit into 2500 2 times, resulting in a remainder of 800.
Use 2 as the next digit of our solution. 
Result so far: 60276.8082352
Subtract 1700 from 2500 to get 800.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8000, and continue the process.

Advancing to step 16:
850 goes into 8000 9 times with a remainder of 350.
Write down 9 as next digit of the result. 
Result so far: 60276.80823529
If we subtract 7650 from 8000, we get 350.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3500, and continue the process.

Our division results in 60276.80823529 with a remaining 3.5e-07.