4221255 ÷ 394 
We want to figure out the number of times 4221255 can be divided by 394.

Going ahead to step 1:
If we divide 4 by 394, we get 0 and a remainder of 4.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 4 and we're left with 4.
Take the next digit (2) from the dividend and append it to 4, then repeat: 42 / 394

Moving on to step 2:
If we divide 42 by 394, we get 0 and a remainder of 42.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 42 leaves us with 42.
Fetch the next digit (2) from the dividend, attach it to 42 and continue: 422 / 394

Advancing to step 3:
The number 394 fits into 422 1 times, leaving a remainder of 28.
The next digit of our result is 1. 
Result so far: 1.0
If we take 394 away from 422, we end up with 28.
Include the next digit (1) from the dividend after 28, then repeat: 281 / 394

Advancing to step 4:
281 divided by 394 is 0 with a remainder of 281.
Use 0 as the next digit of our solution. 
Result so far: 10.0
Subtracting 0 from 281 leaves us with 281.
Bring next digit (2) of the dividend behind the 281 and repeat the process: 2812 / 394

Going ahead to step 5:
394 goes into 2812 7 times with a remainder of 54.
Use 7 as the next digit of our solution. 
Result so far: 107.0
If we subtract 2758 from 2812, we get 54.
Take the next digit (5) from the dividend and append it to 54, then repeat: 545 / 394

Step 6:
394 goes into 545 1 times with a remainder of 151.
Record the quotient 1 as the next digit in the result. 
Result so far: 1071.0
Subtract 394 from 545 to get 151.
Include the next digit (5) from the dividend after 151, then repeat: 1515 / 394

Moving on to step 7:
The number 394 fits into 1515 3 times, leaving a remainder of 333.
The next digit of our result is 3. 
Result so far: 10713.0
If we subtract 1182 from 1515, we get 333.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3330, and continue the process.

Advancing to step 8:
The number 394 fits into 3330 8 times, leaving a remainder of 178.
Put 8 as the next digit of the answer. 
Result so far: 10713.8
If we take 3152 away from 3330, we end up with 178.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1780, and continue the process.

Let's proceed to step 9:
If we divide 1780 by 394, we get 4 and a remainder of 204.
Record the quotient 4 as the next digit in the result. 
Result so far: 10713.84
Deduct 1576 from 1780 and we're left with 204.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2040, and continue the process.

Moving on to step 10:
2040 divided by 394 is 5 with a remainder of 70.
Write down 5 as next digit of the result. 
Result so far: 10713.845
Subtracting 1970 from 2040 leaves us with 70.
Since there are no more digits in the dividend, we add a zero to the remainder making it 700, and continue the process.

On to step 11:
394 goes into 700 1 times with a remainder of 306.
The next digit of our result is 1. 
Result so far: 10713.8451
Subtract 394 from 700 to get 306.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3060, and continue the process.

Going ahead to step 12:
394 goes into 3060 7 times with a remainder of 302.
Put 7 as the next digit of the answer. 
Result so far: 10713.84517
Subtract 2758 from 3060 to get 302.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3020, and continue the process.

Let's proceed to step 13:
The number 394 fits into 3020 7 times, leaving a remainder of 262.
Record the quotient 7 as the next digit in the result. 
Result so far: 10713.845177
If we subtract 2758 from 3020, we get 262.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2620, and continue the process.

The quotient of the division is 10713.845177, and the remainder is 2.62e-05.