Let's divide 7861007 by 866
We want to divide 7861007 by 866.

Step 1:
If we divide 7 by 866, we get 0 and a remainder of 7.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 7, we get 7.
Append the next digit (8) from the dividend to 7 and continue with: 78 / 866

Moving on to step 2:
If we divide 78 by 866, we get 0 and a remainder of 78.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 78, we end up with 78.
Bring next digit (6) of the dividend behind the 78 and repeat the process: 786 / 866

Going ahead to step 3:
786 divided by 866 is 0 with a remainder of 786.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 786, we end up with 786.
Grab the next digit (1) from the dividend, add it to 786, then carry on: 7861 / 866

Step 4:
The number 866 fits into 7861 9 times, leaving a remainder of 67.
Write down 9 as next digit of the result. 
Result so far: 9.0
Deduct 7794 from 7861 and we're left with 67.
Take the next digit (0) from the dividend and append it to 67, then repeat: 670 / 866

Moving on to step 5:
The number 866 fits into 670 0 times, leaving a remainder of 670.
The next digit of our result is 0. 
Result so far: 90.0
Subtracting 0 from 670 leaves us with 670.
Bring next digit (0) of the dividend behind the 670 and repeat the process: 6700 / 866

On to step 6:
The number 866 fits into 6700 7 times, leaving a remainder of 638.
The next digit of our result is 7. 
Result so far: 907.0
The remainder is 638 after subtracting 6062 from 6700.
Bring next digit (7) of the dividend behind the 638 and repeat the process: 6387 / 866

Let's proceed to step 7:
If we divide 6387 by 866, we get 7 and a remainder of 325.
The next digit of our result is 7. 
Result so far: 9077.0
The remainder is 325 after subtracting 6062 from 6387.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3250, and continue the process.

Step 8:
When dividing 3250 by 866, we get 3 with a remainder of 652.
Record the quotient 3 as the next digit in the result. 
Result so far: 9077.3
Subtracting 2598 from 3250 leaves us with 652.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6520, and continue the process.

Advancing to step 9:
The number 866 fits into 6520 7 times, leaving a remainder of 458.
Use 7 as the next digit of our solution. 
Result so far: 9077.37
If we take 6062 away from 6520, we end up with 458.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4580, and continue the process.

Advancing to step 10:
If we divide 4580 by 866, we get 5 and a remainder of 250.
The number 5 becomes the next digit in our result. 
Result so far: 9077.375
Subtracting 4330 from 4580 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.

On to step 11:
If we divide 2500 by 866, we get 2 and a remainder of 768.
The number 2 becomes the next digit in our result. 
Result so far: 9077.3752
If we take 1732 away from 2500, we end up with 768.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7680, and continue the process.

On to step 12:
When dividing 7680 by 866, we get 8 with a remainder of 752.
Record the quotient 8 as the next digit in the result. 
Result so far: 9077.37528
The remainder is 752 after subtracting 6928 from 7680.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7520, and continue the process.

Going ahead to step 13:
866 can be fit into 7520 8 times, resulting in a remainder of 592.
Record the quotient 8 as the next digit in the result. 
Result so far: 9077.375288
Subtracting 6928 from 7520 leaves us with 592.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5920, and continue the process.

The quotient of the division is 9077.375288, and the remainder is 5.92e-05.