We look at the division of 851490 by 50 
We want to figure out the number of times 851490 can be divided by 50.

On to step 1:
If we divide 8 by 50, we get 0 and a remainder of 8.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 8, we get 8.
Include the next digit (5) from the dividend after 8, then repeat: 85 / 50

Let's proceed to step 2:
If we divide 85 by 50, we get 1 and a remainder of 35.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
If we subtract 50 from 85, we get 35.
Grab the next digit (1) from the dividend, add it to 35, then carry on: 351 / 50

On to step 3:
The number 50 fits into 351 7 times, leaving a remainder of 1.
Use 7 as the next digit of our solution. 
Result so far: 17.0
The remainder is 1 after subtracting 350 from 351.
Take the next digit (4) from the dividend and append it to 1, then repeat: 14 / 50

Let's proceed to step 4:
50 can be fit into 14 0 times, resulting in a remainder of 14.
Write down 0 as next digit of the result. 
Result so far: 170.0
If we take 0 away from 14, we end up with 14.
Grab the next digit (9) from the dividend, add it to 14, then carry on: 149 / 50

On to step 5:
If we divide 149 by 50, we get 2 and a remainder of 49.
The next digit of our result is 2. 
Result so far: 1702.0
Subtracting 100 from 149 leaves us with 49.
Grab the next digit (0) from the dividend, add it to 49, then carry on: 490 / 50

Going ahead to step 6:
If we divide 490 by 50, we get 9 and a remainder of 40.
Use 9 as the next digit of our solution. 
Result so far: 17029.0
The remainder is 40 after subtracting 450 from 490.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Going ahead to step 7:
If we divide 400 by 50, we get 8 and a remainder of 0.
The number 8 becomes the next digit in our result. 
Result so far: 17029.8
The remainder is 0 after subtracting 400 from 400.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Step 8:
50 can be fit into 0 0 times, resulting in a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 17029.8
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.

Let's proceed to step 9:
If we divide 0 by 50, we get 0 and a remainder of 0.
The next digit of our result is 0. 
Result so far: 17029.8
The remainder is 0 after subtracting 0 from 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 quotient of the division is 17029.8, and the remainder is 0.0.