Let's divide 84398518 by 321
We want to divide 84398518 by 321.

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
Deduct 0 from 8 and we're left with 8.
Append the next digit (4) from the dividend to 8 and continue with: 84 / 321

Advancing to step 2:
84 divided by 321 is 0 with a remainder of 84.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 84 after subtracting 0 from 84.
Append the next digit (3) from the dividend to 84 and continue with: 843 / 321

Step 3:
If we divide 843 by 321, we get 2 and a remainder of 201.
The number 2 becomes the next digit in our result. 
Result so far: 2.0
If we take 642 away from 843, we end up with 201.
Bring next digit (9) of the dividend behind the 201 and repeat the process: 2019 / 321

Moving on to step 4:
The number 321 fits into 2019 6 times, leaving a remainder of 93.
Put 6 as the next digit of the answer. 
Result so far: 26.0
If we take 1926 away from 2019, we end up with 93.
Bring next digit (8) of the dividend behind the 93 and repeat the process: 938 / 321

Let's proceed to step 5:
If we divide 938 by 321, we get 2 and a remainder of 296.
Write down 2 as next digit of the result. 
Result so far: 262.0
Deduct 642 from 938 and we're left with 296.
Include the next digit (5) from the dividend after 296, then repeat: 2965 / 321

Advancing to step 6:
321 goes into 2965 9 times with a remainder of 76.
Put 9 as the next digit of the answer. 
Result so far: 2629.0
If we take 2889 away from 2965, we end up with 76.
Fetch the next digit (1) from the dividend, attach it to 76 and continue: 761 / 321

Let's proceed to step 7:
The number 321 fits into 761 2 times, leaving a remainder of 119.
The number 2 becomes the next digit in our result. 
Result so far: 26292.0
Subtracting 642 from 761 leaves us with 119.
Bring next digit (8) of the dividend behind the 119 and repeat the process: 1198 / 321

Advancing to step 8:
321 can be fit into 1198 3 times, resulting in a remainder of 235.
Record the quotient 3 as the next digit in the result. 
Result so far: 262923.0
The remainder is 235 after subtracting 963 from 1198.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2350, and continue the process.

On to step 9:
321 goes into 2350 7 times with a remainder of 103.
The number 7 becomes the next digit in our result. 
Result so far: 262923.7
Subtract 2247 from 2350 to get 103.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1030, and continue the process.

On to step 10:
The number 321 fits into 1030 3 times, leaving a remainder of 67.
Record the quotient 3 as the next digit in the result. 
Result so far: 262923.73
Deduct 963 from 1030 and we're left with 67.
Since there are no more digits in the dividend, we add a zero to the remainder making it 670, and continue the process.

Step 11:
321 can be fit into 670 2 times, resulting in a remainder of 28.
Use 2 as the next digit of our solution. 
Result so far: 262923.732
Deduct 642 from 670 and we're left with 28.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

Let's proceed to step 12:
When dividing 280 by 321, we get 0 with a remainder of 280.
The number 0 becomes the next digit in our result. 
Result so far: 262923.732
Subtracting 0 from 280 leaves us with 280.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2800, and continue the process.

Going ahead to step 13:
The number 321 fits into 2800 8 times, leaving a remainder of 232.
Record the quotient 8 as the next digit in the result. 
Result so far: 262923.73208
If we subtract 2568 from 2800, we get 232.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2320, and continue the process.

Let's proceed to step 14:
The number 321 fits into 2320 7 times, leaving a remainder of 73.
Record the quotient 7 as the next digit in the result. 
Result so far: 262923.732087
Subtract 2247 from 2320 to get 73.
Since there are no more digits in the dividend, we add a zero to the remainder making it 730, and continue the process.

On to step 15:
If we divide 730 by 321, we get 2 and a remainder of 88.
The next digit of our result is 2. 
Result so far: 262923.7320872
Subtracting 642 from 730 leaves us with 88.
Since there are no more digits in the dividend, we add a zero to the remainder making it 880, and continue the process.

Going ahead to step 16:
When dividing 880 by 321, we get 2 with a remainder of 238.
Write down 2 as next digit of the result. 
Result so far: 262923.73208722
If we take 642 away from 880, we end up with 238.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2380, and continue the process.

The final result is 262923.73208722 with a remainder of 2.38e-07.