403835 ÷ 31 
We want to figure out the number of times 403835 can be divided by 31.

Step 1:
4 divided by 31 is 0 with a remainder of 4.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 4 leaves us with 4.
Fetch the next digit (0) from the dividend, attach it to 4 and continue: 40 / 31

On to step 2:
31 can be fit into 40 1 times, resulting in a remainder of 9.
Use 1 as the next digit of our solution. 
Result so far: 1.0
Subtracting 31 from 40 leaves us with 9.
Fetch the next digit (3) from the dividend, attach it to 9 and continue: 93 / 31

Advancing to step 3:
31 goes into 93 3 times with a remainder of 0.
Record the quotient 3 as the next digit in the result. 
Result so far: 13.0
If we subtract 93 from 93, we get 0.
Include the next digit (8) from the dividend after 0, then repeat: 8 / 31

Moving on to step 4:
31 goes into 8 0 times with a remainder of 8.
The next digit of our result is 0. 
Result so far: 130.0
If we subtract 0 from 8, we get 8.
Include the next digit (3) from the dividend after 8, then repeat: 83 / 31

Step 5:
83 divided by 31 is 2 with a remainder of 21.
Record the quotient 2 as the next digit in the result. 
Result so far: 1302.0
Deduct 62 from 83 and we're left with 21.
Bring next digit (5) of the dividend behind the 21 and repeat the process: 215 / 31

Let's proceed to step 6:
31 goes into 215 6 times with a remainder of 29.
Write down 6 as next digit of the result. 
Result so far: 13026.0
If we take 186 away from 215, we end up with 29.
Since there are no more digits in the dividend, we add a zero to the remainder making it 290, and continue the process.

Step 7:
If we divide 290 by 31, we get 9 and a remainder of 11.
Use 9 as the next digit of our solution. 
Result so far: 13026.9
Subtract 279 from 290 to get 11.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

Let's proceed to step 8:
31 can be fit into 110 3 times, resulting in a remainder of 17.
The number 3 becomes the next digit in our result. 
Result so far: 13026.93
If we take 93 away from 110, we end up with 17.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

Let's proceed to step 9:
31 can be fit into 170 5 times, resulting in a remainder of 15.
Use 5 as the next digit of our solution. 
Result so far: 13026.935
Deduct 155 from 170 and we're left with 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Let's proceed to step 10:
150 divided by 31 is 4 with a remainder of 26.
The next digit of our result is 4. 
Result so far: 13026.9354
Subtract 124 from 150 to get 26.
Since there are no more digits in the dividend, we add a zero to the remainder making it 260, and continue the process.

Let's proceed to step 11:
31 can be fit into 260 8 times, resulting in a remainder of 12.
Use 8 as the next digit of our solution. 
Result so far: 13026.93548
If we subtract 248 from 260, we get 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Moving on to step 12:
120 divided by 31 is 3 with a remainder of 27.
Put 3 as the next digit of the answer. 
Result so far: 13026.935483
If we subtract 93 from 120, we get 27.
Since there are no more digits in the dividend, we add a zero to the remainder making it 270, and continue the process.

Going ahead to step 13:
31 goes into 270 8 times with a remainder of 22.
The number 8 becomes the next digit in our result. 
Result so far: 13026.9354838
Deduct 248 from 270 and we're left with 22.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

Advancing to step 14:
31 can be fit into 220 7 times, resulting in a remainder of 3.
The next digit of our result is 7. 
Result so far: 13026.93548387
Subtract 217 from 220 to get 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Our division results in 13026.93548387 with a remaining 3e-09.