43790254 ÷ 641 
We want to divide 43790254 by 641.

Moving on to step 1:
The number 641 fits into 4 0 times, leaving a remainder of 4.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 4, we end up with 4.
Grab the next digit (3) from the dividend, add it to 4, then carry on: 43 / 641

Let's proceed to step 2:
When dividing 43 by 641, we get 0 with a remainder of 43.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 43, we end up with 43.
Fetch the next digit (7) from the dividend, attach it to 43 and continue: 437 / 641

Advancing to step 3:
437 divided by 641 is 0 with a remainder of 437.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 437 after subtracting 0 from 437.
Bring next digit (9) of the dividend behind the 437 and repeat the process: 4379 / 641

Step 4:
641 goes into 4379 6 times with a remainder of 533.
The number 6 becomes the next digit in our result. 
Result so far: 6.0
Subtracting 3846 from 4379 leaves us with 533.
Bring next digit (0) of the dividend behind the 533 and repeat the process: 5330 / 641

Moving on to step 5:
If we divide 5330 by 641, we get 8 and a remainder of 202.
The number 8 becomes the next digit in our result. 
Result so far: 68.0
Subtract 5128 from 5330 to get 202.
Take the next digit (2) from the dividend and append it to 202, then repeat: 2022 / 641

Moving on to step 6:
641 goes into 2022 3 times with a remainder of 99.
Use 3 as the next digit of our solution. 
Result so far: 683.0
Subtracting 1923 from 2022 leaves us with 99.
Fetch the next digit (5) from the dividend, attach it to 99 and continue: 995 / 641

Let's proceed to step 7:
641 goes into 995 1 times with a remainder of 354.
Use 1 as the next digit of our solution. 
Result so far: 6831.0
If we subtract 641 from 995, we get 354.
Take the next digit (4) from the dividend and append it to 354, then repeat: 3544 / 641

Let's proceed to step 8:
If we divide 3544 by 641, we get 5 and a remainder of 339.
Use 5 as the next digit of our solution. 
Result so far: 68315.0
Deduct 3205 from 3544 and we're left with 339.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3390, and continue the process.

Step 9:
641 goes into 3390 5 times with a remainder of 185.
Use 5 as the next digit of our solution. 
Result so far: 68315.5
If we take 3205 away from 3390, we end up with 185.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1850, and continue the process.

Moving on to step 10:
641 can be fit into 1850 2 times, resulting in a remainder of 568.
Put 2 as the next digit of the answer. 
Result so far: 68315.52
If we take 1282 away from 1850, we end up with 568.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5680, and continue the process.

Moving on to step 11:
If we divide 5680 by 641, we get 8 and a remainder of 552.
Record the quotient 8 as the next digit in the result. 
Result so far: 68315.528
Subtracting 5128 from 5680 leaves us with 552.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5520, and continue the process.

Step 12:
641 can be fit into 5520 8 times, resulting in a remainder of 392.
Record the quotient 8 as the next digit in the result. 
Result so far: 68315.5288
If we subtract 5128 from 5520, we get 392.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3920, and continue the process.

After the division, we end up with 68315.5288 and a remainder of 0.00392.