We're dividing 521739 by 75 
We want to divide 521739 by 75.

Advancing to step 1:
75 goes into 5 0 times 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.
Fetch the next digit (2) from the dividend, attach it to 5 and continue: 52 / 75

On to step 2:
52 divided by 75 is 0 with a remainder of 52.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 52 leaves us with 52.
Fetch the next digit (1) from the dividend, attach it to 52 and continue: 521 / 75

Moving on to step 3:
75 goes into 521 6 times with a remainder of 71.
Use 6 as the next digit of our solution. 
Result so far: 6.0
Deduct 450 from 521 and we're left with 71.
Append the next digit (7) from the dividend to 71 and continue with: 717 / 75

Advancing to step 4:
75 goes into 717 9 times with a remainder of 42.
Write down 9 as next digit of the result. 
Result so far: 69.0
Subtract 675 from 717 to get 42.
Bring next digit (3) of the dividend behind the 42 and repeat the process: 423 / 75

Step 5:
75 can be fit into 423 5 times, resulting in a remainder of 48.
The number 5 becomes the next digit in our result. 
Result so far: 695.0
Subtract 375 from 423 to get 48.
Take the next digit (9) from the dividend and append it to 48, then repeat: 489 / 75

Let's proceed to step 6:
489 divided by 75 is 6 with a remainder of 39.
The next digit of our result is 6. 
Result so far: 6956.0
If we take 450 away from 489, we end up with 39.
Since there are no more digits in the dividend, we add a zero to the remainder making it 390, and continue the process.

On to step 7:
390 divided by 75 is 5 with a remainder of 15.
Put 5 as the next digit of the answer. 
Result so far: 6956.5
Subtracting 375 from 390 leaves us with 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Step 8:
The number 75 fits into 150 2 times, leaving a remainder of 0.
Record the quotient 2 as the next digit in the result. 
Result so far: 6956.52
Subtracting 150 from 150 leaves us with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Moving on to step 9:
75 goes into 0 0 times with a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 6956.52
Subtracting 0 from 0 leaves us with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

On to step 10:
75 can be fit into 0 0 times, resulting in a remainder of 0.
The next digit of our result is 0. 
Result so far: 6956.52
If we take 0 away from 0, we end up with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

The final result is 6956.52 with a remainder of 0.0.