We look at the division of 645789 by 49 
We're looking to find how many times 49 goes into 645789.

Step 1:
6 divided by 49 is 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.
Include the next digit (4) from the dividend after 6, then repeat: 64 / 49

On to step 2:
If we divide 64 by 49, we get 1 and a remainder of 15.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
Deduct 49 from 64 and we're left with 15.
Include the next digit (5) from the dividend after 15, then repeat: 155 / 49

Let's proceed to step 3:
When dividing 155 by 49, we get 3 with a remainder of 8.
Write down 3 as next digit of the result. 
Result so far: 13.0
Subtract 147 from 155 to get 8.
Append the next digit (7) from the dividend to 8 and continue with: 87 / 49

Going ahead to step 4:
49 goes into 87 1 times with a remainder of 38.
Write down 1 as next digit of the result. 
Result so far: 131.0
Deduct 49 from 87 and we're left with 38.
Bring next digit (8) of the dividend behind the 38 and repeat the process: 388 / 49

On to step 5:
When dividing 388 by 49, we get 7 with a remainder of 45.
Use 7 as the next digit of our solution. 
Result so far: 1317.0
Deduct 343 from 388 and we're left with 45.
Bring next digit (9) of the dividend behind the 45 and repeat the process: 459 / 49

Step 6:
459 divided by 49 is 9 with a remainder of 18.
Put 9 as the next digit of the answer. 
Result so far: 13179.0
Subtracting 441 from 459 leaves us with 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

On to step 7:
The number 49 fits into 180 3 times, leaving a remainder of 33.
Write down 3 as next digit of the result. 
Result so far: 13179.3
The remainder is 33 after subtracting 147 from 180.
Since there are no more digits in the dividend, we add a zero to the remainder making it 330, and continue the process.

Advancing to step 8:
49 goes into 330 6 times with a remainder of 36.
Put 6 as the next digit of the answer. 
Result so far: 13179.36
Subtracting 294 from 330 leaves us with 36.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

On to step 9:
49 goes into 360 7 times with a remainder of 17.
The number 7 becomes the next digit in our result. 
Result so far: 13179.367
If we take 343 away from 360, we end up with 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 10:
When dividing 170 by 49, we get 3 with a remainder of 23.
The next digit of our result is 3. 
Result so far: 13179.3673
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.

Advancing to step 11:
The number 49 fits into 230 4 times, leaving a remainder of 34.
Write down 4 as next digit of the result. 
Result so far: 13179.36734
If we subtract 196 from 230, we get 34.
Since there are no more digits in the dividend, we add a zero to the remainder making it 340, and continue the process.

Moving on to step 12:
The number 49 fits into 340 6 times, leaving a remainder of 46.
Record the quotient 6 as the next digit in the result. 
Result so far: 13179.367346
If we take 294 away from 340, we end up with 46.
Since there are no more digits in the dividend, we add a zero to the remainder making it 460, and continue the process.

Going ahead to step 13:
When dividing 460 by 49, we get 9 with a remainder of 19.
Put 9 as the next digit of the answer. 
Result so far: 13179.3673469
The remainder is 19 after subtracting 441 from 460.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

On to step 14:
If we divide 190 by 49, we get 3 and a remainder of 43.
The number 3 becomes the next digit in our result. 
Result so far: 13179.36734693
Subtract 147 from 190 to 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.

In conclusion, the division gives 13179.36734693 with a balance of 4.3e-08.