We look at the division of 50370509 by 866 
Let's see how many times 866 fits into 50370509.

On to step 1:
866 can be fit into 5 0 times, resulting in a remainder of 5.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 5 and we're left with 5.
Bring next digit (0) of the dividend behind the 5 and repeat the process: 50 / 866

Advancing to step 2:
866 can be fit into 50 0 times, resulting in a remainder of 50.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 50, we end up with 50.
Grab the next digit (3) from the dividend, add it to 50, then carry on: 503 / 866

Let's proceed to step 3:
503 divided by 866 is 0 with a remainder of 503.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 503 and we're left with 503.
Append the next digit (7) from the dividend to 503 and continue with: 5037 / 866

Advancing to step 4:
If we divide 5037 by 866, we get 5 and a remainder of 707.
The next digit of our result is 5. 
Result so far: 5.0
The remainder is 707 after subtracting 4330 from 5037.
Bring next digit (0) of the dividend behind the 707 and repeat the process: 7070 / 866

Let's proceed to step 5:
If we divide 7070 by 866, we get 8 and a remainder of 142.
The next digit of our result is 8. 
Result so far: 58.0
Subtracting 6928 from 7070 leaves us with 142.
Grab the next digit (5) from the dividend, add it to 142, then carry on: 1425 / 866

On to step 6:
When dividing 1425 by 866, we get 1 with a remainder of 559.
Record the quotient 1 as the next digit in the result. 
Result so far: 581.0
If we take 866 away from 1425, we end up with 559.
Include the next digit (0) from the dividend after 559, then repeat: 5590 / 866

Let's proceed to step 7:
866 goes into 5590 6 times with a remainder of 394.
The next digit of our result is 6. 
Result so far: 5816.0
The remainder is 394 after subtracting 5196 from 5590.
Bring next digit (9) of the dividend behind the 394 and repeat the process: 3949 / 866

Advancing to step 8:
866 goes into 3949 4 times with a remainder of 485.
Record the quotient 4 as the next digit in the result. 
Result so far: 58164.0
Deduct 3464 from 3949 and we're left with 485.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4850, and continue the process.

Moving on to step 9:
If we divide 4850 by 866, we get 5 and a remainder of 520.
The number 5 becomes the next digit in our result. 
Result so far: 58164.5
Subtracting 4330 from 4850 leaves us with 520.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5200, and continue the process.

Step 10:
When dividing 5200 by 866, we get 6 with a remainder of 4.
The number 6 becomes the next digit in our result. 
Result so far: 58164.56
The remainder is 4 after subtracting 5196 from 5200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Step 11:
If we divide 40 by 866, we get 0 and a remainder of 40.
Write down 0 as next digit of the result. 
Result so far: 58164.56
The remainder is 40 after subtracting 0 from 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Moving on to step 12:
866 goes into 400 0 times with a remainder of 400.
Use 0 as the next digit of our solution. 
Result so far: 58164.56
Deduct 0 from 400 and we're left with 400.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4000, and continue the process.

Our division results in 58164.56 with a remaining 0.004.