521749 divided by 87 
Let's see how many times 87 fits into 521749.

Advancing to step 1:
When dividing 5 by 87, we get 0 with a remainder of 5.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 5 leaves us with 5.
Take the next digit (2) from the dividend and append it to 5, then repeat: 52 / 87

Advancing to step 2:
When dividing 52 by 87, we get 0 with a remainder of 52.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 52, we end up with 52.
Include the next digit (1) from the dividend after 52, then repeat: 521 / 87

Moving on to step 3:
If we divide 521 by 87, we get 5 and a remainder of 86.
Put 5 as the next digit of the answer. 
Result so far: 5.0
Subtract 435 from 521 to get 86.
Fetch the next digit (7) from the dividend, attach it to 86 and continue: 867 / 87

On to step 4:
When dividing 867 by 87, we get 9 with a remainder of 84.
The next digit of our result is 9. 
Result so far: 59.0
If we subtract 783 from 867, we get 84.
Grab the next digit (4) from the dividend, add it to 84, then carry on: 844 / 87

Going ahead to step 5:
If we divide 844 by 87, we get 9 and a remainder of 61.
Use 9 as the next digit of our solution. 
Result so far: 599.0
If we take 783 away from 844, we end up with 61.
Fetch the next digit (9) from the dividend, attach it to 61 and continue: 619 / 87

Step 6:
87 goes into 619 7 times with a remainder of 10.
Put 7 as the next digit of the answer. 
Result so far: 5997.0
If we subtract 609 from 619, we get 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 7:
87 can be fit into 100 1 times, resulting in a remainder of 13.
The next digit of our result is 1. 
Result so far: 5997.1
The remainder is 13 after subtracting 87 from 100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

Moving on to step 8:
87 goes into 130 1 times with a remainder of 43.
Use 1 as the next digit of our solution. 
Result so far: 5997.11
Subtracting 87 from 130 leaves us with 43.
Since there are no more digits in the dividend, we add a zero to the remainder making it 430, and continue the process.

The quotient of the division is 5997.11, and the remainder is 0.043.