We divide 42491897 by 851
We want to divide 42491897 by 851.

Step 1:
When dividing 4 by 851, we get 0 with a remainder of 4.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 4 leaves us with 4.
Take the next digit (2) from the dividend and append it to 4, then repeat: 42 / 851

Going ahead to step 2:
If we divide 42 by 851, we get 0 and a remainder of 42.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 42 to get 42.
Take the next digit (4) from the dividend and append it to 42, then repeat: 424 / 851

Let's proceed to step 3:
424 divided by 851 is 0 with a remainder of 424.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 424 after subtracting 0 from 424.
Take the next digit (9) from the dividend and append it to 424, then repeat: 4249 / 851

Going ahead to step 4:
If we divide 4249 by 851, we get 4 and a remainder of 845.
Use 4 as the next digit of our solution. 
Result so far: 4.0
If we subtract 3404 from 4249, we get 845.
Append the next digit (1) from the dividend to 845 and continue with: 8451 / 851

Moving on to step 5:
If we divide 8451 by 851, we get 9 and a remainder of 792.
Put 9 as the next digit of the answer. 
Result so far: 49.0
Subtract 7659 from 8451 to get 792.
Take the next digit (8) from the dividend and append it to 792, then repeat: 7928 / 851

Moving on to step 6:
If we divide 7928 by 851, we get 9 and a remainder of 269.
The number 9 becomes the next digit in our result. 
Result so far: 499.0
Deduct 7659 from 7928 and we're left with 269.
Bring next digit (9) of the dividend behind the 269 and repeat the process: 2699 / 851

On to step 7:
When dividing 2699 by 851, we get 3 with a remainder of 146.
The next digit of our result is 3. 
Result so far: 4993.0
Subtracting 2553 from 2699 leaves us with 146.
Include the next digit (7) from the dividend after 146, then repeat: 1467 / 851

Step 8:
If we divide 1467 by 851, we get 1 and a remainder of 616.
Record the quotient 1 as the next digit in the result. 
Result so far: 49931.0
If we take 851 away from 1467, we end up with 616.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6160, and continue the process.

Going ahead to step 9:
851 goes into 6160 7 times with a remainder of 203.
Record the quotient 7 as the next digit in the result. 
Result so far: 49931.7
The remainder is 203 after subtracting 5957 from 6160.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2030, and continue the process.

Step 10:
The number 851 fits into 2030 2 times, leaving a remainder of 328.
The number 2 becomes the next digit in our result. 
Result so far: 49931.72
Subtracting 1702 from 2030 leaves us with 328.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3280, and continue the process.

Going ahead to step 11:
The number 851 fits into 3280 3 times, leaving a remainder of 727.
Write down 3 as next digit of the result. 
Result so far: 49931.723
Deduct 2553 from 3280 and we're left with 727.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7270, and continue the process.

Going ahead to step 12:
The number 851 fits into 7270 8 times, leaving a remainder of 462.
Put 8 as the next digit of the answer. 
Result so far: 49931.7238
Subtract 6808 from 7270 to get 462.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4620, and continue the process.

Going ahead to step 13:
4620 divided by 851 is 5 with a remainder of 365.
Use 5 as the next digit of our solution. 
Result so far: 49931.72385
If we take 4255 away from 4620, we end up with 365.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3650, and continue the process.

On to step 14:
851 goes into 3650 4 times with a remainder of 246.
The number 4 becomes the next digit in our result. 
Result so far: 49931.723854
Subtract 3404 from 3650 to get 246.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2460, and continue the process.

Step 15:
If we divide 2460 by 851, we get 2 and a remainder of 758.
The next digit of our result is 2. 
Result so far: 49931.7238542
Subtract 1702 from 2460 to get 758.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7580, and continue the process.

On to step 16:
851 goes into 7580 8 times with a remainder of 772.
Use 8 as the next digit of our solution. 
Result so far: 49931.72385428
If we take 6808 away from 7580, we end up with 772.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7720, and continue the process.

In conclusion, the division gives 49931.72385428 with a balance of 7.72e-07.