66591060 ÷ 891 
We want to divide 66591060 by 891.

Going ahead to step 1:
891 goes into 6 0 times with a remainder of 6.
The number 0 becomes the next digit in our 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 / 891

Moving on to step 2:
66 divided by 891 is 0 with a remainder of 66.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 66, we get 66.
Take the next digit (5) from the dividend and append it to 66, then repeat: 665 / 891

Step 3:
The number 891 fits into 665 0 times, leaving a remainder of 665.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 665 and we're left with 665.
Take the next digit (9) from the dividend and append it to 665, then repeat: 6659 / 891

Advancing to step 4:
891 can be fit into 6659 7 times, resulting in a remainder of 422.
Put 7 as the next digit of the answer. 
Result so far: 7.0
Deduct 6237 from 6659 and we're left with 422.
Grab the next digit (1) from the dividend, add it to 422, then carry on: 4221 / 891

Step 5:
When dividing 4221 by 891, we get 4 with a remainder of 657.
Use 4 as the next digit of our solution. 
Result so far: 74.0
If we take 3564 away from 4221, we end up with 657.
Append the next digit (0) from the dividend to 657 and continue with: 6570 / 891

Advancing to step 6:
If we divide 6570 by 891, we get 7 and a remainder of 333.
The number 7 becomes the next digit in our result. 
Result so far: 747.0
The remainder is 333 after subtracting 6237 from 6570.
Append the next digit (6) from the dividend to 333 and continue with: 3336 / 891

Advancing to step 7:
If we divide 3336 by 891, we get 3 and a remainder of 663.
Use 3 as the next digit of our solution. 
Result so far: 7473.0
If we subtract 2673 from 3336, we get 663.
Append the next digit (0) from the dividend to 663 and continue with: 6630 / 891

On to step 8:
891 goes into 6630 7 times with a remainder of 393.
Write down 7 as next digit of the result. 
Result so far: 74737.0
If we subtract 6237 from 6630, we get 393.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3930, and continue the process.

Step 9:
When dividing 3930 by 891, we get 4 with a remainder of 366.
Record the quotient 4 as the next digit in the result. 
Result so far: 74737.4
If we subtract 3564 from 3930, we get 366.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3660, and continue the process.

Moving on to step 10:
3660 divided by 891 is 4 with a remainder of 96.
Record the quotient 4 as the next digit in the result. 
Result so far: 74737.44
If we subtract 3564 from 3660, we get 96.
Since there are no more digits in the dividend, we add a zero to the remainder making it 960, and continue the process.

The quotient of the division is 74737.44, and the remainder is 0.096.