We divide 77090889 by 660
We're looking to find how many times 660 goes into 77090889.

Advancing to step 1:
The number 660 fits into 7 0 times, leaving a remainder of 7.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 7 after subtracting 0 from 7.
Bring next digit (7) of the dividend behind the 7 and repeat the process: 77 / 660

Moving on to step 2:
If we divide 77 by 660, we get 0 and a remainder of 77.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 77, we get 77.
Include the next digit (0) from the dividend after 77, then repeat: 770 / 660

Step 3:
If we divide 770 by 660, we get 1 and a remainder of 110.
The next digit of our result is 1. 
Result so far: 1.0
The remainder is 110 after subtracting 660 from 770.
Append the next digit (9) from the dividend to 110 and continue with: 1109 / 660

Moving on to step 4:
When dividing 1109 by 660, we get 1 with a remainder of 449.
Put 1 as the next digit of the answer. 
Result so far: 11.0
The remainder is 449 after subtracting 660 from 1109.
Include the next digit (0) from the dividend after 449, then repeat: 4490 / 660

On to step 5:
660 can be fit into 4490 6 times, resulting in a remainder of 530.
The next digit of our result is 6. 
Result so far: 116.0
Subtract 3960 from 4490 to get 530.
Take the next digit (8) from the dividend and append it to 530, then repeat: 5308 / 660

Moving on to step 6:
The number 660 fits into 5308 8 times, leaving a remainder of 28.
The number 8 becomes the next digit in our result. 
Result so far: 1168.0
Deduct 5280 from 5308 and we're left with 28.
Include the next digit (8) from the dividend after 28, then repeat: 288 / 660

Moving on to step 7:
660 goes into 288 0 times with a remainder of 288.
Put 0 as the next digit of the answer. 
Result so far: 11680.0
The remainder is 288 after subtracting 0 from 288.
Bring next digit (9) of the dividend behind the 288 and repeat the process: 2889 / 660

Advancing to step 8:
The number 660 fits into 2889 4 times, leaving a remainder of 249.
The number 4 becomes the next digit in our result. 
Result so far: 116804.0
The remainder is 249 after subtracting 2640 from 2889.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2490, and continue the process.

Let's proceed to step 9:
2490 divided by 660 is 3 with a remainder of 510.
The number 3 becomes the next digit in our result. 
Result so far: 116804.3
If we take 1980 away from 2490, we end up with 510.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5100, and continue the process.

On to step 10:
5100 divided by 660 is 7 with a remainder of 480.
The number 7 becomes the next digit in our result. 
Result so far: 116804.37
Subtract 4620 from 5100 to get 480.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4800, and continue the process.

Moving on to step 11:
If we divide 4800 by 660, we get 7 and a remainder of 180.
Write down 7 as next digit of the result. 
Result so far: 116804.377
Subtract 4620 from 4800 to get 180.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1800, and continue the process.

After the division, we end up with 116804.377 and a remainder of 0.018.