We look at the division of 10284258 by 643 
We want to divide 10284258 by 643.

Step 1:
The number 643 fits into 1 0 times, leaving a remainder of 1.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 1 to get 1.
Take the next digit (0) from the dividend and append it to 1, then repeat: 10 / 643

On to step 2:
643 can be fit into 10 0 times, resulting in a remainder of 10.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 10 leaves us with 10.
Fetch the next digit (2) from the dividend, attach it to 10 and continue: 102 / 643

Let's proceed to step 3:
If we divide 102 by 643, we get 0 and a remainder of 102.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 102, we get 102.
Take the next digit (8) from the dividend and append it to 102, then repeat: 1028 / 643

Advancing to step 4:
643 goes into 1028 1 times with a remainder of 385.
Use 1 as the next digit of our solution. 
Result so far: 1.0
Deduct 643 from 1028 and we're left with 385.
Fetch the next digit (4) from the dividend, attach it to 385 and continue: 3854 / 643

Moving on to step 5:
If we divide 3854 by 643, we get 5 and a remainder of 639.
Put 5 as the next digit of the answer. 
Result so far: 15.0
If we take 3215 away from 3854, we end up with 639.
Fetch the next digit (2) from the dividend, attach it to 639 and continue: 6392 / 643

On to step 6:
643 can be fit into 6392 9 times, resulting in a remainder of 605.
Use 9 as the next digit of our solution. 
Result so far: 159.0
Subtracting 5787 from 6392 leaves us with 605.
Include the next digit (5) from the dividend after 605, then repeat: 6055 / 643

Step 7:
If we divide 6055 by 643, we get 9 and a remainder of 268.
The next digit of our result is 9. 
Result so far: 1599.0
Subtracting 5787 from 6055 leaves us with 268.
Fetch the next digit (8) from the dividend, attach it to 268 and continue: 2688 / 643

Let's proceed to step 8:
2688 divided by 643 is 4 with a remainder of 116.
The number 4 becomes the next digit in our result. 
Result so far: 15994.0
Subtracting 2572 from 2688 leaves us with 116.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1160, and continue the process.

On to step 9:
When dividing 1160 by 643, we get 1 with a remainder of 517.
Use 1 as the next digit of our solution. 
Result so far: 15994.1
If we subtract 643 from 1160, we get 517.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5170, and continue the process.

On to step 10:
When dividing 5170 by 643, we get 8 with a remainder of 26.
The number 8 becomes the next digit in our result. 
Result so far: 15994.18
The remainder is 26 after subtracting 5144 from 5170.
Since there are no more digits in the dividend, we add a zero to the remainder making it 260, and continue the process.

Step 11:
If we divide 260 by 643, we get 0 and a remainder of 260.
Write down 0 as next digit of the result. 
Result so far: 15994.18
The remainder is 260 after subtracting 0 from 260.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2600, and continue the process.

Moving on to step 12:
If we divide 2600 by 643, we get 4 and a remainder of 28.
The number 4 becomes the next digit in our result. 
Result so far: 15994.1804
The remainder is 28 after subtracting 2572 from 2600.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

Moving on to step 13:
643 can be fit into 280 0 times, resulting in a remainder of 280.
Record the quotient 0 as the next digit in the result. 
Result so far: 15994.1804
If we take 0 away from 280, we end up 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.

Moving on to step 14:
If we divide 2800 by 643, we get 4 and a remainder of 228.
The number 4 becomes the next digit in our result. 
Result so far: 15994.180404
Subtracting 2572 from 2800 leaves us with 228.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2280, and continue the process.

Moving on to step 15:
If we divide 2280 by 643, we get 3 and a remainder of 351.
Use 3 as the next digit of our solution. 
Result so far: 15994.1804043
If we subtract 1929 from 2280, we get 351.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3510, and continue the process.

Step 16:
3510 divided by 643 is 5 with a remainder of 295.
The next digit of our result is 5. 
Result so far: 15994.18040435
The remainder is 295 after subtracting 3215 from 3510.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2950, and continue the process.

The final result is 15994.18040435 with a remainder of 2.95e-07.