We look at the division of 31396343 by 403 
We want to figure out the number of times 31396343 can be divided by 403.

Let's proceed to step 1:
If we divide 3 by 403, we get 0 and a remainder of 3.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 3, we end up with 3.
Grab the next digit (1) from the dividend, add it to 3, then carry on: 31 / 403

On to step 2:
403 can be fit into 31 0 times, resulting in a remainder of 31.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 31, we get 31.
Append the next digit (3) from the dividend to 31 and continue with: 313 / 403

Let's proceed to step 3:
When dividing 313 by 403, we get 0 with a remainder of 313.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 313 leaves us with 313.
Grab the next digit (9) from the dividend, add it to 313, then carry on: 3139 / 403

Step 4:
403 can be fit into 3139 7 times, resulting in a remainder of 318.
Put 7 as the next digit of the answer. 
Result so far: 7.0
Subtract 2821 from 3139 to get 318.
Append the next digit (6) from the dividend to 318 and continue with: 3186 / 403

Step 5:
When dividing 3186 by 403, we get 7 with a remainder of 365.
Write down 7 as next digit of the result. 
Result so far: 77.0
Deduct 2821 from 3186 and we're left with 365.
Grab the next digit (3) from the dividend, add it to 365, then carry on: 3653 / 403

Let's proceed to step 6:
403 can be fit into 3653 9 times, resulting in a remainder of 26.
Record the quotient 9 as the next digit in the result. 
Result so far: 779.0
If we subtract 3627 from 3653, we get 26.
Fetch the next digit (4) from the dividend, attach it to 26 and continue: 264 / 403

Moving on to step 7:
The number 403 fits into 264 0 times, leaving a remainder of 264.
The number 0 becomes the next digit in our result. 
Result so far: 7790.0
Subtract 0 from 264 to get 264.
Grab the next digit (3) from the dividend, add it to 264, then carry on: 2643 / 403

Step 8:
If we divide 2643 by 403, we get 6 and a remainder of 225.
The number 6 becomes the next digit in our result. 
Result so far: 77906.0
Subtract 2418 from 2643 to get 225.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2250, and continue the process.

On to step 9:
If we divide 2250 by 403, we get 5 and a remainder of 235.
The number 5 becomes the next digit in our result. 
Result so far: 77906.5
Subtracting 2015 from 2250 leaves us with 235.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2350, and continue the process.

Let's proceed to step 10:
When dividing 2350 by 403, we get 5 with a remainder of 335.
Write down 5 as next digit of the result. 
Result so far: 77906.55
If we subtract 2015 from 2350, we get 335.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3350, and continue the process.

After the division, we end up with 77906.55 and a remainder of 0.335.