We're dividing 21528767 by 77 
We want to figure out the number of times 21528767 can be divided by 77.

Going ahead to step 1:
The number 77 fits into 2 0 times, leaving a remainder of 2.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 2 and we're left with 2.
Bring next digit (1) of the dividend behind the 2 and repeat the process: 21 / 77

Let's proceed to step 2:
If we divide 21 by 77, we get 0 and a remainder of 21.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 21 after subtracting 0 from 21.
Fetch the next digit (5) from the dividend, attach it to 21 and continue: 215 / 77

Moving on to step 3:
77 goes into 215 2 times with a remainder of 61.
Record the quotient 2 as the next digit in the result. 
Result so far: 2.0
Deduct 154 from 215 and we're left with 61.
Take the next digit (2) from the dividend and append it to 61, then repeat: 612 / 77

Advancing to step 4:
The number 77 fits into 612 7 times, leaving a remainder of 73.
Use 7 as the next digit of our solution. 
Result so far: 27.0
The remainder is 73 after subtracting 539 from 612.
Take the next digit (8) from the dividend and append it to 73, then repeat: 738 / 77

Let's proceed to step 5:
77 goes into 738 9 times with a remainder of 45.
Write down 9 as next digit of the result. 
Result so far: 279.0
Subtract 693 from 738 to get 45.
Bring next digit (7) of the dividend behind the 45 and repeat the process: 457 / 77

Step 6:
457 divided by 77 is 5 with a remainder of 72.
Record the quotient 5 as the next digit in the result. 
Result so far: 2795.0
Subtract 385 from 457 to get 72.
Fetch the next digit (6) from the dividend, attach it to 72 and continue: 726 / 77

Step 7:
The number 77 fits into 726 9 times, leaving a remainder of 33.
The number 9 becomes the next digit in our result. 
Result so far: 27959.0
Subtracting 693 from 726 leaves us with 33.
Grab the next digit (7) from the dividend, add it to 33, then carry on: 337 / 77

Advancing to step 8:
77 can be fit into 337 4 times, resulting in a remainder of 29.
The number 4 becomes the next digit in our result. 
Result so far: 279594.0
Subtract 308 from 337 to get 29.
Since there are no more digits in the dividend, we add a zero to the remainder making it 290, and continue the process.

Step 9:
The number 77 fits into 290 3 times, leaving a remainder of 59.
The next digit of our result is 3. 
Result so far: 279594.3
Subtract 231 from 290 to get 59.
Since there are no more digits in the dividend, we add a zero to the remainder making it 590, and continue the process.

On to step 10:
If we divide 590 by 77, we get 7 and a remainder of 51.
Write down 7 as next digit of the result. 
Result so far: 279594.37
If we subtract 539 from 590, we get 51.
Since there are no more digits in the dividend, we add a zero to the remainder making it 510, and continue the process.

Let's proceed to step 11:
When dividing 510 by 77, we get 6 with a remainder of 48.
Use 6 as the next digit of our solution. 
Result so far: 279594.376
If we take 462 away from 510, we end up 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.

Step 12:
The number 77 fits into 480 6 times, leaving a remainder of 18.
Record the quotient 6 as the next digit in the result. 
Result so far: 279594.3766
Subtracting 462 from 480 leaves us with 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

The quotient of the division is 279594.3766, and the remainder is 0.00018.