Let's divide 8639451 by 320
We want to divide 8639451 by 320.

Moving on to step 1:
The number 320 fits into 8 0 times, leaving a remainder of 8.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 8, we end up with 8.
Grab the next digit (6) from the dividend, add it to 8, then carry on: 86 / 320

Moving on to step 2:
86 divided by 320 is 0 with a remainder of 86.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 86 after subtracting 0 from 86.
Append the next digit (3) from the dividend to 86 and continue with: 863 / 320

Advancing to step 3:
320 can be fit into 863 2 times, resulting in a remainder of 223.
Put 2 as the next digit of the answer. 
Result so far: 2.0
The remainder is 223 after subtracting 640 from 863.
Append the next digit (9) from the dividend to 223 and continue with: 2239 / 320

On to step 4:
320 can be fit into 2239 6 times, resulting in a remainder of 319.
Put 6 as the next digit of the answer. 
Result so far: 26.0
Subtracting 1920 from 2239 leaves us with 319.
Grab the next digit (4) from the dividend, add it to 319, then carry on: 3194 / 320

Advancing to step 5:
When dividing 3194 by 320, we get 9 with a remainder of 314.
The next digit of our result is 9. 
Result so far: 269.0
Subtract 2880 from 3194 to get 314.
Append the next digit (5) from the dividend to 314 and continue with: 3145 / 320

Let's proceed to step 6:
320 can be fit into 3145 9 times, resulting in a remainder of 265.
Use 9 as the next digit of our solution. 
Result so far: 2699.0
If we take 2880 away from 3145, we end up with 265.
Append the next digit (1) from the dividend to 265 and continue with: 2651 / 320

On to step 7:
320 goes into 2651 8 times with a remainder of 91.
Record the quotient 8 as the next digit in the result. 
Result so far: 26998.0
Subtracting 2560 from 2651 leaves us with 91.
Since there are no more digits in the dividend, we add a zero to the remainder making it 910, and continue the process.

Step 8:
The number 320 fits into 910 2 times, leaving a remainder of 270.
The next digit of our result is 2. 
Result so far: 26998.2
If we take 640 away from 910, we end up with 270.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2700, and continue the process.

Step 9:
When dividing 2700 by 320, we get 8 with a remainder of 140.
Record the quotient 8 as the next digit in the result. 
Result so far: 26998.28
If we subtract 2560 from 2700, we get 140.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1400, and continue the process.

Let's proceed to step 10:
If we divide 1400 by 320, we get 4 and a remainder of 120.
The number 4 becomes the next digit in our result. 
Result so far: 26998.284
Deduct 1280 from 1400 and we're left with 120.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1200, and continue the process.

Step 11:
The number 320 fits into 1200 3 times, leaving a remainder of 240.
The number 3 becomes the next digit in our result. 
Result so far: 26998.2843
Subtract 960 from 1200 to get 240.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2400, and continue the process.

Let's proceed to step 12:
2400 divided by 320 is 7 with a remainder of 160.
The next digit of our result is 7. 
Result so far: 26998.28437
The remainder is 160 after subtracting 2240 from 2400.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1600, and continue the process.

Moving on to step 13:
The number 320 fits into 1600 5 times, leaving a remainder of 0.
Use 5 as the next digit of our solution. 
Result so far: 26998.284375
If we subtract 1600 from 1600, we get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Step 14:
The number 320 fits into 0 0 times, leaving a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 26998.284375
Subtract 0 from 0 to get 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 15:
The number 320 fits into 0 0 times, leaving a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 26998.284375
If we subtract 0 from 0, we get 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 outcome is 26998.284375, with a leftover of 0.0.