We're dividing 66684221 by 77 
We want to figure out the number of times 66684221 can be divided by 77.

Let's proceed to step 1:
6 divided by 77 is 0 with a remainder of 6.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 6 after subtracting 0 from 6.
Bring next digit (6) of the dividend behind the 6 and repeat the process: 66 / 77

Let's proceed to step 2:
66 divided by 77 is 0 with a remainder of 66.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 66 leaves us with 66.
Take the next digit (6) from the dividend and append it to 66, then repeat: 666 / 77

Let's proceed to step 3:
The number 77 fits into 666 8 times, leaving a remainder of 50.
Record the quotient 8 as the next digit in the result. 
Result so far: 8.0
Subtract 616 from 666 to get 50.
Bring next digit (8) of the dividend behind the 50 and repeat the process: 508 / 77

Let's proceed to step 4:
508 divided by 77 is 6 with a remainder of 46.
Use 6 as the next digit of our solution. 
Result so far: 86.0
Subtracting 462 from 508 leaves us with 46.
Grab the next digit (4) from the dividend, add it to 46, then carry on: 464 / 77

On to step 5:
77 can be fit into 464 6 times, resulting in a remainder of 2.
Use 6 as the next digit of our solution. 
Result so far: 866.0
If we subtract 462 from 464, we get 2.
Fetch the next digit (2) from the dividend, attach it to 2 and continue: 22 / 77

Moving on to step 6:
When dividing 22 by 77, we get 0 with a remainder of 22.
Use 0 as the next digit of our solution. 
Result so far: 8660.0
The remainder is 22 after subtracting 0 from 22.
Fetch the next digit (2) from the dividend, attach it to 22 and continue: 222 / 77

Going ahead to step 7:
77 goes into 222 2 times with a remainder of 68.
Record the quotient 2 as the next digit in the result. 
Result so far: 86602.0
Subtract 154 from 222 to get 68.
Bring next digit (1) of the dividend behind the 68 and repeat the process: 681 / 77

On to step 8:
When dividing 681 by 77, we get 8 with a remainder of 65.
The number 8 becomes the next digit in our result. 
Result so far: 866028.0
Subtract 616 from 681 to get 65.
Since there are no more digits in the dividend, we add a zero to the remainder making it 650, and continue the process.

Going ahead to step 9:
650 divided by 77 is 8 with a remainder of 34.
Use 8 as the next digit of our solution. 
Result so far: 866028.8
If we take 616 away from 650, we end up with 34.
Since there are no more digits in the dividend, we add a zero to the remainder making it 340, and continue the process.

Step 10:
340 divided by 77 is 4 with a remainder of 32.
Put 4 as the next digit of the answer. 
Result so far: 866028.84
Subtract 308 from 340 to get 32.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

Let's proceed to step 11:
If we divide 320 by 77, we get 4 and a remainder of 12.
The number 4 becomes the next digit in our result. 
Result so far: 866028.844
If we take 308 away from 320, we end up with 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

After the division, we end up with 866028.844 and a remainder of 0.0012.