39447245 divided by 257 
We want to figure out the number of times 39447245 can be divided by 257.

On to step 1:
257 can be fit into 3 0 times, resulting in a remainder of 3.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 3 leaves us with 3.
Bring next digit (9) of the dividend behind the 3 and repeat the process: 39 / 257

Let's proceed to step 2:
257 goes into 39 0 times with a remainder of 39.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 39, we get 39.
Bring next digit (4) of the dividend behind the 39 and repeat the process: 394 / 257

Going ahead to step 3:
If we divide 394 by 257, we get 1 and a remainder of 137.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
If we take 257 away from 394, we end up with 137.
Take the next digit (4) from the dividend and append it to 137, then repeat: 1374 / 257

Step 4:
The number 257 fits into 1374 5 times, leaving a remainder of 89.
Use 5 as the next digit of our solution. 
Result so far: 15.0
Subtract 1285 from 1374 to get 89.
Fetch the next digit (7) from the dividend, attach it to 89 and continue: 897 / 257

Step 5:
257 goes into 897 3 times with a remainder of 126.
Write down 3 as next digit of the result. 
Result so far: 153.0
The remainder is 126 after subtracting 771 from 897.
Bring next digit (2) of the dividend behind the 126 and repeat the process: 1262 / 257

Advancing to step 6:
1262 divided by 257 is 4 with a remainder of 234.
Record the quotient 4 as the next digit in the result. 
Result so far: 1534.0
If we subtract 1028 from 1262, we get 234.
Append the next digit (4) from the dividend to 234 and continue with: 2344 / 257

Moving on to step 7:
257 can be fit into 2344 9 times, resulting in a remainder of 31.
Record the quotient 9 as the next digit in the result. 
Result so far: 15349.0
The remainder is 31 after subtracting 2313 from 2344.
Fetch the next digit (5) from the dividend, attach it to 31 and continue: 315 / 257

Advancing to step 8:
If we divide 315 by 257, we get 1 and a remainder of 58.
Use 1 as the next digit of our solution. 
Result so far: 153491.0
If we take 257 away from 315, we end up with 58.
Since there are no more digits in the dividend, we add a zero to the remainder making it 580, and continue the process.

On to step 9:
When dividing 580 by 257, we get 2 with a remainder of 66.
Use 2 as the next digit of our solution. 
Result so far: 153491.2
The remainder is 66 after subtracting 514 from 580.
Since there are no more digits in the dividend, we add a zero to the remainder making it 660, and continue the process.

Advancing to step 10:
660 divided by 257 is 2 with a remainder of 146.
The next digit of our result is 2. 
Result so far: 153491.22
Subtracting 514 from 660 leaves us with 146.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1460, and continue the process.

The final result is 153491.22 with a remainder of 0.146.