We look at the division of 643056 by 45 
We want to figure out the number of times 643056 can be divided by 45.

Advancing to step 1:
45 goes into 6 0 times with a remainder of 6.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 6 and we're left with 6.
Bring next digit (4) of the dividend behind the 6 and repeat the process: 64 / 45

Let's proceed to step 2:
When dividing 64 by 45, we get 1 with a remainder of 19.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
Subtract 45 from 64 to get 19.
Include the next digit (3) from the dividend after 19, then repeat: 193 / 45

Step 3:
When dividing 193 by 45, we get 4 with a remainder of 13.
Put 4 as the next digit of the answer. 
Result so far: 14.0
If we take 180 away from 193, we end up with 13.
Append the next digit (0) from the dividend to 13 and continue with: 130 / 45

Going ahead to step 4:
When dividing 130 by 45, we get 2 with a remainder of 40.
Put 2 as the next digit of the answer. 
Result so far: 142.0
Subtract 90 from 130 to get 40.
Grab the next digit (5) from the dividend, add it to 40, then carry on: 405 / 45

Step 5:
When dividing 405 by 45, we get 9 with a remainder of 0.
The number 9 becomes the next digit in our result. 
Result so far: 1429.0
Deduct 405 from 405 and we're left with 0.
Grab the next digit (6) from the dividend, add it to 0, then carry on: 6 / 45

Going ahead to step 6:
If we divide 6 by 45, we get 0 and a remainder of 6.
The next digit of our result is 0. 
Result so far: 14290.0
The remainder is 6 after subtracting 0 from 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Going ahead to step 7:
If we divide 60 by 45, we get 1 and a remainder of 15.
Use 1 as the next digit of our solution. 
Result so far: 14290.1
If we take 45 away from 60, we end up with 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Moving on to step 8:
When dividing 150 by 45, we get 3 with a remainder of 15.
Put 3 as the next digit of the answer. 
Result so far: 14290.13
Subtract 135 from 150 to get 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Step 9:
45 goes into 150 3 times with a remainder of 15.
The next digit of our result is 3. 
Result so far: 14290.133
If we subtract 135 from 150, we get 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

The final result is 14290.133 with a remainder of 0.0015.