We look at the division of 66552509 by 850 
Our goal is to divide 66552509 by 850.

Moving on to step 1:
850 goes into 6 0 times with a remainder of 6.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 6 after subtracting 0 from 6.
Append the next digit (6) from the dividend to 6 and continue with: 66 / 850

Moving on to step 2:
66 divided by 850 is 0 with a remainder of 66.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 66 leaves us with 66.
Include the next digit (5) from the dividend after 66, then repeat: 665 / 850

Step 3:
850 goes into 665 0 times with a remainder of 665.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 665 and we're left with 665.
Take the next digit (5) from the dividend and append it to 665, then repeat: 6655 / 850

Advancing to step 4:
The number 850 fits into 6655 7 times, leaving a remainder of 705.
Use 7 as the next digit of our solution. 
Result so far: 7.0
If we take 5950 away from 6655, we end up with 705.
Append the next digit (2) from the dividend to 705 and continue with: 7052 / 850

Step 5:
850 goes into 7052 8 times with a remainder of 252.
Record the quotient 8 as the next digit in the result. 
Result so far: 78.0
If we subtract 6800 from 7052, we get 252.
Take the next digit (5) from the dividend and append it to 252, then repeat: 2525 / 850

Going ahead to step 6:
850 can be fit into 2525 2 times, resulting in a remainder of 825.
Put 2 as the next digit of the answer. 
Result so far: 782.0
Subtracting 1700 from 2525 leaves us with 825.
Append the next digit (0) from the dividend to 825 and continue with: 8250 / 850

Moving on to step 7:
850 can be fit into 8250 9 times, resulting in a remainder of 600.
Record the quotient 9 as the next digit in the result. 
Result so far: 7829.0
Subtracting 7650 from 8250 leaves us with 600.
Append the next digit (9) from the dividend to 600 and continue with: 6009 / 850

Going ahead to step 8:
When dividing 6009 by 850, we get 7 with a remainder of 59.
Put 7 as the next digit of the answer. 
Result so far: 78297.0
The remainder is 59 after subtracting 5950 from 6009.
Since there are no more digits in the dividend, we add a zero to the remainder making it 590, and continue the process.

Step 9:
590 divided by 850 is 0 with a remainder of 590.
Write down 0 as next digit of the result. 
Result so far: 78297.0
Deduct 0 from 590 and we're left with 590.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5900, and continue the process.

Moving on to step 10:
5900 divided by 850 is 6 with a remainder of 800.
The next digit of our result is 6. 
Result so far: 78297.06
Subtracting 5100 from 5900 leaves us with 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 11:
If we divide 8000 by 850, we get 9 and a remainder of 350.
Put 9 as the next digit of the answer. 
Result so far: 78297.069
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.

Let's proceed to step 12:
3500 divided by 850 is 4 with a remainder of 100.
Record the quotient 4 as the next digit in the result. 
Result so far: 78297.0694
Deduct 3400 from 3500 and we're left with 100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1000, and continue the process.

Going ahead to step 13:
If we divide 1000 by 850, we get 1 and a remainder of 150.
Record the quotient 1 as the next digit in the result. 
Result so far: 78297.06941
Subtracting 850 from 1000 leaves us with 150.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1500, and continue the process.

Let's proceed to step 14:
If we divide 1500 by 850, we get 1 and a remainder of 650.
The next digit of our result is 1. 
Result so far: 78297.069411
If we take 850 away from 1500, we end up with 650.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6500, and continue the process.

The quotient of the division is 78297.069411, and the remainder is 6.5e-05.