43043479 divided by 646 
We're looking to find how many times 646 goes into 43043479.

Moving on to step 1:
The number 646 fits into 4 0 times, leaving a remainder of 4.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 4 to get 4.
Include the next digit (3) from the dividend after 4, then repeat: 43 / 646

Going ahead to step 2:
When dividing 43 by 646, we get 0 with a remainder of 43.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 43 and we're left with 43.
Bring next digit (0) of the dividend behind the 43 and repeat the process: 430 / 646

On to step 3:
430 divided by 646 is 0 with a remainder of 430.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 430 to get 430.
Bring next digit (4) of the dividend behind the 430 and repeat the process: 4304 / 646

Step 4:
If we divide 4304 by 646, we get 6 and a remainder of 428.
Put 6 as the next digit of the answer. 
Result so far: 6.0
Subtract 3876 from 4304 to get 428.
Take the next digit (3) from the dividend and append it to 428, then repeat: 4283 / 646

Advancing to step 5:
If we divide 4283 by 646, we get 6 and a remainder of 407.
The next digit of our result is 6. 
Result so far: 66.0
If we subtract 3876 from 4283, we get 407.
Take the next digit (4) from the dividend and append it to 407, then repeat: 4074 / 646

Going ahead to step 6:
When dividing 4074 by 646, we get 6 with a remainder of 198.
Put 6 as the next digit of the answer. 
Result so far: 666.0
The remainder is 198 after subtracting 3876 from 4074.
Grab the next digit (7) from the dividend, add it to 198, then carry on: 1987 / 646

Let's proceed to step 7:
When dividing 1987 by 646, we get 3 with a remainder of 49.
The number 3 becomes the next digit in our result. 
Result so far: 6663.0
If we take 1938 away from 1987, we end up with 49.
Append the next digit (9) from the dividend to 49 and continue with: 499 / 646

On to step 8:
646 can be fit into 499 0 times, resulting in a remainder of 499.
Put 0 as the next digit of the answer. 
Result so far: 66630.0
Subtracting 0 from 499 leaves us with 499.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4990, and continue the process.

Going ahead to step 9:
646 can be fit into 4990 7 times, resulting in a remainder of 468.
Put 7 as the next digit of the answer. 
Result so far: 66630.7
Deduct 4522 from 4990 and we're left with 468.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4680, and continue the process.

Step 10:
646 goes into 4680 7 times with a remainder of 158.
Write down 7 as next digit of the result. 
Result so far: 66630.77
If we take 4522 away from 4680, we end up with 158.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1580, and continue the process.

After the division, we end up with 66630.77 and a remainder of 0.158.