We're dividing 23565415 by 521 
Let's see how many times 521 fits into 23565415.

Advancing to step 1:
The number 521 fits into 2 0 times, leaving 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.
Grab the next digit (3) from the dividend, add it to 2, then carry on: 23 / 521

On to step 2:
23 divided by 521 is 0 with a remainder of 23.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 23, we end up with 23.
Bring next digit (5) of the dividend behind the 23 and repeat the process: 235 / 521

On to step 3:
521 can be fit into 235 0 times, resulting in a remainder of 235.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 235 and we're left with 235.
Fetch the next digit (6) from the dividend, attach it to 235 and continue: 2356 / 521

Let's proceed to step 4:
If we divide 2356 by 521, we get 4 and a remainder of 272.
The number 4 becomes the next digit in our result. 
Result so far: 4.0
Subtracting 2084 from 2356 leaves us with 272.
Fetch the next digit (5) from the dividend, attach it to 272 and continue: 2725 / 521

Let's proceed to step 5:
521 goes into 2725 5 times with a remainder of 120.
Record the quotient 5 as the next digit in the result. 
Result so far: 45.0
If we subtract 2605 from 2725, we get 120.
Fetch the next digit (4) from the dividend, attach it to 120 and continue: 1204 / 521

Moving on to step 6:
The number 521 fits into 1204 2 times, leaving a remainder of 162.
The number 2 becomes the next digit in our result. 
Result so far: 452.0
If we subtract 1042 from 1204, we get 162.
Take the next digit (1) from the dividend and append it to 162, then repeat: 1621 / 521

Advancing to step 7:
1621 divided by 521 is 3 with a remainder of 58.
The number 3 becomes the next digit in our result. 
Result so far: 4523.0
Subtract 1563 from 1621 to get 58.
Take the next digit (5) from the dividend and append it to 58, then repeat: 585 / 521

Moving on to step 8:
The number 521 fits into 585 1 times, leaving a remainder of 64.
The number 1 becomes the next digit in our result. 
Result so far: 45231.0
Subtract 521 from 585 to get 64.
Since there are no more digits in the dividend, we add a zero to the remainder making it 640, and continue the process.

On to step 9:
The number 521 fits into 640 1 times, leaving a remainder of 119.
Record the quotient 1 as the next digit in the result. 
Result so far: 45231.1
If we take 521 away from 640, we end up with 119.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1190, and continue the process.

Step 10:
The number 521 fits into 1190 2 times, leaving a remainder of 148.
The next digit of our result is 2. 
Result so far: 45231.12
The remainder is 148 after subtracting 1042 from 1190.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1480, and continue the process.

Moving on to step 11:
1480 divided by 521 is 2 with a remainder of 438.
Use 2 as the next digit of our solution. 
Result so far: 45231.122
Deduct 1042 from 1480 and we're left with 438.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4380, and continue the process.

After the division, we end up with 45231.122 and a remainder of 0.0438.