43468628 ÷ 643 
We want to figure out the number of times 43468628 can be divided by 643.

On to step 1:
If we divide 4 by 643, we get 0 and a remainder of 4.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 4 after subtracting 0 from 4.
Append the next digit (3) from the dividend to 4 and continue with: 43 / 643

Going ahead to step 2:
643 can be fit into 43 0 times, resulting in a remainder of 43.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 43 to get 43.
Append the next digit (4) from the dividend to 43 and continue with: 434 / 643

Advancing to step 3:
643 goes into 434 0 times with a remainder of 434.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 434 after subtracting 0 from 434.
Grab the next digit (6) from the dividend, add it to 434, then carry on: 4346 / 643

Moving on to step 4:
643 goes into 4346 6 times with a remainder of 488.
Put 6 as the next digit of the answer. 
Result so far: 6.0
If we take 3858 away from 4346, we end up with 488.
Include the next digit (8) from the dividend after 488, then repeat: 4888 / 643

Moving on to step 5:
4888 divided by 643 is 7 with a remainder of 387.
Use 7 as the next digit of our solution. 
Result so far: 67.0
Deduct 4501 from 4888 and we're left with 387.
Grab the next digit (6) from the dividend, add it to 387, then carry on: 3876 / 643

On to step 6:
When dividing 3876 by 643, we get 6 with a remainder of 18.
The next digit of our result is 6. 
Result so far: 676.0
Deduct 3858 from 3876 and we're left with 18.
Bring next digit (2) of the dividend behind the 18 and repeat the process: 182 / 643

On to step 7:
If we divide 182 by 643, we get 0 and a remainder of 182.
Put 0 as the next digit of the answer. 
Result so far: 6760.0
If we subtract 0 from 182, we get 182.
Take the next digit (8) from the dividend and append it to 182, then repeat: 1828 / 643

Advancing to step 8:
1828 divided by 643 is 2 with a remainder of 542.
Record the quotient 2 as the next digit in the result. 
Result so far: 67602.0
Subtracting 1286 from 1828 leaves us with 542.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5420, and continue the process.

Going ahead to step 9:
643 can be fit into 5420 8 times, resulting in a remainder of 276.
The number 8 becomes the next digit in our result. 
Result so far: 67602.8
Deduct 5144 from 5420 and we're left with 276.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2760, and continue the process.

Moving on to step 10:
If we divide 2760 by 643, we get 4 and a remainder of 188.
Record the quotient 4 as the next digit in the result. 
Result so far: 67602.84
Subtract 2572 from 2760 to get 188.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1880, and continue the process.

Let's proceed to step 11:
When dividing 1880 by 643, we get 2 with a remainder of 594.
Use 2 as the next digit of our solution. 
Result so far: 67602.842
Deduct 1286 from 1880 and we're left with 594.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5940, and continue the process.

Step 12:
643 can be fit into 5940 9 times, resulting in a remainder of 153.
Write down 9 as next digit of the result. 
Result so far: 67602.8429
Subtract 5787 from 5940 to get 153.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1530, and continue the process.

On to step 13:
If we divide 1530 by 643, we get 2 and a remainder of 244.
Put 2 as the next digit of the answer. 
Result so far: 67602.84292
If we take 1286 away from 1530, we end up with 244.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2440, and continue the process.

Moving on to step 14:
2440 divided by 643 is 3 with a remainder of 511.
Record the quotient 3 as the next digit in the result. 
Result so far: 67602.842923
Subtract 1929 from 2440 to get 511.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5110, and continue the process.

Going ahead to step 15:
5110 divided by 643 is 7 with a remainder of 609.
The next digit of our result is 7. 
Result so far: 67602.8429237
If we subtract 4501 from 5110, we get 609.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6090, and continue the process.

Let's proceed to step 16:
When dividing 6090 by 643, we get 9 with a remainder of 303.
Write down 9 as next digit of the result. 
Result so far: 67602.84292379
If we subtract 5787 from 6090, we get 303.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3030, and continue the process.

In conclusion, the division gives 67602.84292379 with a balance of 3.03e-07.