87490489 ÷ 321 
Our goal is to divide 87490489 by 321.

Let's proceed to step 1:
8 divided by 321 is 0 with a remainder of 8.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 8, we end up with 8.
Take the next digit (7) from the dividend and append it to 8, then repeat: 87 / 321

Advancing to step 2:
The number 321 fits into 87 0 times, leaving a remainder of 87.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 87, we get 87.
Fetch the next digit (4) from the dividend, attach it to 87 and continue: 874 / 321

Advancing to step 3:
If we divide 874 by 321, we get 2 and a remainder of 232.
The next digit of our result is 2. 
Result so far: 2.0
Deduct 642 from 874 and we're left with 232.
Include the next digit (9) from the dividend after 232, then repeat: 2329 / 321

Let's proceed to step 4:
321 goes into 2329 7 times with a remainder of 82.
The number 7 becomes the next digit in our result. 
Result so far: 27.0
If we take 2247 away from 2329, we end up with 82.
Take the next digit (0) from the dividend and append it to 82, then repeat: 820 / 321

Going ahead to step 5:
When dividing 820 by 321, we get 2 with a remainder of 178.
The next digit of our result is 2. 
Result so far: 272.0
If we take 642 away from 820, we end up with 178.
Bring next digit (4) of the dividend behind the 178 and repeat the process: 1784 / 321

Advancing to step 6:
The number 321 fits into 1784 5 times, leaving a remainder of 179.
The next digit of our result is 5. 
Result so far: 2725.0
If we subtract 1605 from 1784, we get 179.
Bring next digit (8) of the dividend behind the 179 and repeat the process: 1798 / 321

Going ahead to step 7:
The number 321 fits into 1798 5 times, leaving a remainder of 193.
Use 5 as the next digit of our solution. 
Result so far: 27255.0
If we take 1605 away from 1798, we end up with 193.
Take the next digit (9) from the dividend and append it to 193, then repeat: 1939 / 321

Going ahead to step 8:
1939 divided by 321 is 6 with a remainder of 13.
Write down 6 as next digit of the result. 
Result so far: 272556.0
Subtract 1926 from 1939 to get 13.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

Going ahead to step 9:
130 divided by 321 is 0 with a remainder of 130.
Put 0 as the next digit of the answer. 
Result so far: 272556.0
Deduct 0 from 130 and we're left with 130.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1300, and continue the process.

On to step 10:
321 goes into 1300 4 times with a remainder of 16.
The number 4 becomes the next digit in our result. 
Result so far: 272556.04
The remainder is 16 after subtracting 1284 from 1300.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Advancing to step 11:
321 can be fit into 160 0 times, resulting in a remainder of 160.
The number 0 becomes the next digit in our result. 
Result so far: 272556.04
Subtract 0 from 160 to get 160.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1600, and continue the process.

Let's proceed to step 12:
When dividing 1600 by 321, we get 4 with a remainder of 316.
The number 4 becomes the next digit in our result. 
Result so far: 272556.0404
The remainder is 316 after subtracting 1284 from 1600.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3160, and continue the process.

Moving on to step 13:
If we divide 3160 by 321, we get 9 and a remainder of 271.
The number 9 becomes the next digit in our result. 
Result so far: 272556.04049
If we take 2889 away from 3160, we end up with 271.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2710, and continue the process.

Moving on to step 14:
321 goes into 2710 8 times with a remainder of 142.
The next digit of our result is 8. 
Result so far: 272556.040498
If we take 2568 away from 2710, we end up with 142.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1420, and continue the process.

On to step 15:
The number 321 fits into 1420 4 times, leaving a remainder of 136.
The next digit of our result is 4. 
Result so far: 272556.0404984
The remainder is 136 after subtracting 1284 from 1420.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1360, and continue the process.

Step 16:
The number 321 fits into 1360 4 times, leaving a remainder of 76.
Record the quotient 4 as the next digit in the result. 
Result so far: 272556.04049844
The remainder is 76 after subtracting 1284 from 1360.
Since there are no more digits in the dividend, we add a zero to the remainder making it 760, and continue the process.

The final result is 272556.04049844 with a remainder of 7.6e-08.