We're dividing 236521 by 77 
We want to divide 236521 by 77.

Advancing to step 1:
77 can be fit into 2 0 times, resulting in a remainder of 2.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 2 and we're left with 2.
Include the next digit (3) from the dividend after 2, then repeat: 23 / 77

Advancing to step 2:
The number 77 fits into 23 0 times, leaving a remainder of 23.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 23, we get 23.
Bring next digit (6) of the dividend behind the 23 and repeat the process: 236 / 77

Moving on to step 3:
When dividing 236 by 77, we get 3 with a remainder of 5.
Put 3 as the next digit of the answer. 
Result so far: 3.0
If we subtract 231 from 236, we get 5.
Fetch the next digit (5) from the dividend, attach it to 5 and continue: 55 / 77

Let's proceed to step 4:
77 can be fit into 55 0 times, resulting in a remainder of 55.
Record the quotient 0 as the next digit in the result. 
Result so far: 30.0
Subtract 0 from 55 to get 55.
Bring next digit (2) of the dividend behind the 55 and repeat the process: 552 / 77

Advancing to step 5:
77 goes into 552 7 times with a remainder of 13.
Put 7 as the next digit of the answer. 
Result so far: 307.0
Deduct 539 from 552 and we're left with 13.
Grab the next digit (1) from the dividend, add it to 13, then carry on: 131 / 77

Going ahead to step 6:
77 can be fit into 131 1 times, resulting in a remainder of 54.
Record the quotient 1 as the next digit in the result. 
Result so far: 3071.0
Deduct 77 from 131 and we're left with 54.
Since there are no more digits in the dividend, we add a zero to the remainder making it 540, and continue the process.

Advancing to step 7:
The number 77 fits into 540 7 times, leaving a remainder of 1.
Use 7 as the next digit of our solution. 
Result so far: 3071.7
If we subtract 539 from 540, we get 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Advancing to step 8:
When dividing 10 by 77, we get 0 with a remainder of 10.
Use 0 as the next digit of our solution. 
Result so far: 3071.7
Deduct 0 from 10 and we're left with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Step 9:
100 divided by 77 is 1 with a remainder of 23.
Put 1 as the next digit of the answer. 
Result so far: 3071.701
If we subtract 77 from 100, we get 23.
Since there are no more digits in the dividend, we add a zero to the remainder making it 230, and continue the process.

Advancing to step 10:
230 divided by 77 is 2 with a remainder of 76.
Use 2 as the next digit of our solution. 
Result so far: 3071.7012
If we subtract 154 from 230, we get 76.
Since there are no more digits in the dividend, we add a zero to the remainder making it 760, and continue the process.

Advancing to step 11:
760 divided by 77 is 9 with a remainder of 67.
Record the quotient 9 as the next digit in the result. 
Result so far: 3071.70129
Deduct 693 from 760 and we're left with 67.
Since there are no more digits in the dividend, we add a zero to the remainder making it 670, and continue the process.

Going ahead to step 12:
The number 77 fits into 670 8 times, leaving a remainder of 54.
Use 8 as the next digit of our solution. 
Result so far: 3071.701298
Subtract 616 from 670 to get 54.
Since there are no more digits in the dividend, we add a zero to the remainder making it 540, and continue the process.

Let's proceed to step 13:
540 divided by 77 is 7 with a remainder of 1.
Use 7 as the next digit of our solution. 
Result so far: 3071.7012987
Subtracting 539 from 540 leaves us with 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Moving on to step 14:
If we divide 10 by 77, we get 0 and a remainder of 10.
Write down 0 as next digit of the result. 
Result so far: 3071.7012987
Subtracting 0 from 10 leaves us with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

In conclusion, the division gives 3071.7012987 with a balance of 1e-08.