We look at the division of 643289 by 49 
Let's see how many times 49 fits into 643289.

Advancing to step 1:
When dividing 6 by 49, we get 0 with a remainder of 6.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 6, we end up with 6.
Fetch the next digit (4) from the dividend, attach it to 6 and continue: 64 / 49

Going ahead to step 2:
The number 49 fits into 64 1 times, leaving a remainder of 15.
Write down 1 as next digit of the result. 
Result so far: 1.0
If we subtract 49 from 64, we get 15.
Include the next digit (3) from the dividend after 15, then repeat: 153 / 49

On to step 3:
49 goes into 153 3 times with a remainder of 6.
Write down 3 as next digit of the result. 
Result so far: 13.0
Subtract 147 from 153 to get 6.
Fetch the next digit (2) from the dividend, attach it to 6 and continue: 62 / 49

Step 4:
The number 49 fits into 62 1 times, leaving a remainder of 13.
Record the quotient 1 as the next digit in the result. 
Result so far: 131.0
The remainder is 13 after subtracting 49 from 62.
Take the next digit (8) from the dividend and append it to 13, then repeat: 138 / 49

Let's proceed to step 5:
The number 49 fits into 138 2 times, leaving a remainder of 40.
Write down 2 as next digit of the result. 
Result so far: 1312.0
If we take 98 away from 138, we end up with 40.
Append the next digit (9) from the dividend to 40 and continue with: 409 / 49

Moving on to step 6:
49 goes into 409 8 times with a remainder of 17.
Record the quotient 8 as the next digit in the result. 
Result so far: 13128.0
Subtract 392 from 409 to get 17.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

Let's proceed to step 7:
170 divided by 49 is 3 with a remainder of 23.
Put 3 as the next digit of the answer. 
Result so far: 13128.3
If we subtract 147 from 170, we get 23.
Since there are no more digits in the dividend, we add a zero to the remainder making it 230, and continue the process.

Going ahead to step 8:
230 divided by 49 is 4 with a remainder of 34.
The number 4 becomes the next digit in our result. 
Result so far: 13128.34
The remainder is 34 after subtracting 196 from 230.
Since there are no more digits in the dividend, we add a zero to the remainder making it 340, and continue the process.

Advancing to step 9:
The number 49 fits into 340 6 times, leaving a remainder of 46.
The next digit of our result is 6. 
Result so far: 13128.346
Subtract 294 from 340 to get 46.
Since there are no more digits in the dividend, we add a zero to the remainder making it 460, and continue the process.

Advancing to step 10:
The number 49 fits into 460 9 times, leaving a remainder of 19.
The next digit of our result is 9. 
Result so far: 13128.3469
Subtract 441 from 460 to get 19.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

Advancing to step 11:
49 can be fit into 190 3 times, resulting in a remainder of 43.
The next digit of our result is 3. 
Result so far: 13128.34693
If we subtract 147 from 190, we get 43.
Since there are no more digits in the dividend, we add a zero to the remainder making it 430, and continue the process.

Going ahead to step 12:
When dividing 430 by 49, we get 8 with a remainder of 38.
The next digit of our result is 8. 
Result so far: 13128.346938
Deduct 392 from 430 and we're left with 38.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

Moving on to step 13:
When dividing 380 by 49, we get 7 with a remainder of 37.
The next digit of our result is 7. 
Result so far: 13128.3469387
The remainder is 37 after subtracting 343 from 380.
Since there are no more digits in the dividend, we add a zero to the remainder making it 370, and continue the process.

On to step 14:
The number 49 fits into 370 7 times, leaving a remainder of 27.
Write down 7 as next digit of the result. 
Result so far: 13128.34693877
Subtracting 343 from 370 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.

The final outcome is 13128.34693877, with a leftover of 2.7e-08.