We're dividing 489891 by 87 
We want to figure out the number of times 489891 can be divided by 87.

Step 1:
87 can be fit into 4 0 times, resulting in a remainder of 4.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 4 after subtracting 0 from 4.
Fetch the next digit (8) from the dividend, attach it to 4 and continue: 48 / 87

On to step 2:
When dividing 48 by 87, we get 0 with a remainder of 48.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 48 and we're left with 48.
Include the next digit (9) from the dividend after 48, then repeat: 489 / 87

Moving on to step 3:
When dividing 489 by 87, we get 5 with a remainder of 54.
Put 5 as the next digit of the answer. 
Result so far: 5.0
The remainder is 54 after subtracting 435 from 489.
Include the next digit (8) from the dividend after 54, then repeat: 548 / 87

Step 4:
When dividing 548 by 87, we get 6 with a remainder of 26.
Put 6 as the next digit of the answer. 
Result so far: 56.0
Deduct 522 from 548 and we're left with 26.
Fetch the next digit (9) from the dividend, attach it to 26 and continue: 269 / 87

On to step 5:
87 goes into 269 3 times with a remainder of 8.
Record the quotient 3 as the next digit in the result. 
Result so far: 563.0
The remainder is 8 after subtracting 261 from 269.
Fetch the next digit (1) from the dividend, attach it to 8 and continue: 81 / 87

Moving on to step 6:
The number 87 fits into 81 0 times, leaving a remainder of 81.
The next digit of our result is 0. 
Result so far: 5630.0
Subtract 0 from 81 to get 81.
Since there are no more digits in the dividend, we add a zero to the remainder making it 810, and continue the process.

Going ahead to step 7:
If we divide 810 by 87, we get 9 and a remainder of 27.
Use 9 as the next digit of our solution. 
Result so far: 5630.9
Subtracting 783 from 810 leaves us with 27.
Since there are no more digits in the dividend, we add a zero to the remainder making it 270, and continue the process.

Let's proceed to step 8:
87 can be fit into 270 3 times, resulting in a remainder of 9.
Use 3 as the next digit of our solution. 
Result so far: 5630.93
Subtracting 261 from 270 leaves us with 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

Moving on to step 9:
87 can be fit into 90 1 times, resulting in a remainder of 3.
Write down 1 as next digit of the result. 
Result so far: 5630.931
The remainder is 3 after subtracting 87 from 90.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

On to step 10:
87 can be fit into 30 0 times, resulting in a remainder of 30.
Use 0 as the next digit of our solution. 
Result so far: 5630.931
If we take 0 away from 30, we end up with 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Step 11:
If we divide 300 by 87, we get 3 and a remainder of 39.
The next digit of our result is 3. 
Result so far: 5630.93103
Subtract 261 from 300 to get 39.
Since there are no more digits in the dividend, we add a zero to the remainder making it 390, and continue the process.

Advancing to step 12:
87 goes into 390 4 times with a remainder of 42.
Use 4 as the next digit of our solution. 
Result so far: 5630.931034
The remainder is 42 after subtracting 348 from 390.
Since there are no more digits in the dividend, we add a zero to the remainder making it 420, and continue the process.

Step 13:
87 can be fit into 420 4 times, resulting in a remainder of 72.
The next digit of our result is 4. 
Result so far: 5630.9310344
The remainder is 72 after subtracting 348 from 420.
Since there are no more digits in the dividend, we add a zero to the remainder making it 720, and continue the process.

The final outcome is 5630.9310344, with a leftover of 7.2e-07.