521275 divided by 86 
Our goal is to divide 521275 by 86.

Step 1:
5 divided by 86 is 0 with a remainder of 5.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 5 to get 5.
Bring next digit (2) of the dividend behind the 5 and repeat the process: 52 / 86

Advancing to step 2:
86 can be fit into 52 0 times, resulting in a remainder of 52.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 52 and we're left with 52.
Append the next digit (1) from the dividend to 52 and continue with: 521 / 86

Step 3:
If we divide 521 by 86, we get 6 and a remainder of 5.
Put 6 as the next digit of the answer. 
Result so far: 6.0
Deduct 516 from 521 and we're left with 5.
Include the next digit (2) from the dividend after 5, then repeat: 52 / 86

Going ahead to step 4:
If we divide 52 by 86, we get 0 and a remainder of 52.
Put 0 as the next digit of the answer. 
Result so far: 60.0
If we subtract 0 from 52, we get 52.
Append the next digit (7) from the dividend to 52 and continue with: 527 / 86

Step 5:
86 can be fit into 527 6 times, resulting in a remainder of 11.
Record the quotient 6 as the next digit in the result. 
Result so far: 606.0
Deduct 516 from 527 and we're left with 11.
Grab the next digit (5) from the dividend, add it to 11, then carry on: 115 / 86

Advancing to step 6:
The number 86 fits into 115 1 times, leaving a remainder of 29.
The number 1 becomes the next digit in our result. 
Result so far: 6061.0
If we subtract 86 from 115, we 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.

Let's proceed to step 7:
86 goes into 290 3 times with a remainder of 32.
Put 3 as the next digit of the answer. 
Result so far: 6061.3
The remainder is 32 after subtracting 258 from 290.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

Step 8:
86 can be fit into 320 3 times, resulting in a remainder of 62.
Use 3 as the next digit of our solution. 
Result so far: 6061.33
Subtracting 258 from 320 leaves us with 62.
Since there are no more digits in the dividend, we add a zero to the remainder making it 620, and continue the process.

The final outcome is 6061.33, with a leftover of 0.062.