Let's divide 870921 by 77
We want to figure out the number of times 870921 can be divided by 77.

Step 1:
The number 77 fits into 8 0 times, leaving a remainder of 8.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 8, we get 8.
Include the next digit (7) from the dividend after 8, then repeat: 87 / 77

Moving on to step 2:
When dividing 87 by 77, we get 1 with a remainder of 10.
Write down 1 as next digit of the result. 
Result so far: 1.0
Subtract 77 from 87 to get 10.
Include the next digit (0) from the dividend after 10, then repeat: 100 / 77

Advancing to step 3:
77 can be fit into 100 1 times, resulting in a remainder of 23.
The next digit of our result is 1. 
Result so far: 11.0
If we take 77 away from 100, we end up with 23.
Bring next digit (9) of the dividend behind the 23 and repeat the process: 239 / 77

Step 4:
When dividing 239 by 77, we get 3 with a remainder of 8.
Write down 3 as next digit of the result. 
Result so far: 113.0
Deduct 231 from 239 and we're left with 8.
Append the next digit (2) from the dividend to 8 and continue with: 82 / 77

Let's proceed to step 5:
77 can be fit into 82 1 times, resulting in a remainder of 5.
Use 1 as the next digit of our solution. 
Result so far: 1131.0
If we subtract 77 from 82, we get 5.
Append the next digit (1) from the dividend to 5 and continue with: 51 / 77

On to step 6:
When dividing 51 by 77, we get 0 with a remainder of 51.
Put 0 as the next digit of the answer. 
Result so far: 11310.0
If we take 0 away from 51, we end up with 51.
Since there are no more digits in the dividend, we add a zero to the remainder making it 510, and continue the process.

On to step 7:
77 can be fit into 510 6 times, resulting in a remainder of 48.
Record the quotient 6 as the next digit in the result. 
Result so far: 11310.6
Subtracting 462 from 510 leaves us with 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

Advancing to step 8:
480 divided by 77 is 6 with a remainder of 18.
Record the quotient 6 as the next digit in the result. 
Result so far: 11310.66
The remainder is 18 after subtracting 462 from 480.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

The final outcome is 11310.66, with a leftover of 0.018.