45909 ÷ 31 
Let's see how many times 31 fits into 45909.

Let's proceed to step 1:
31 goes into 4 0 times with a remainder of 4.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 4 leaves us with 4.
Fetch the next digit (5) from the dividend, attach it to 4 and continue: 45 / 31

Going ahead to step 2:
When dividing 45 by 31, we get 1 with a remainder of 14.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
Deduct 31 from 45 and we're left with 14.
Include the next digit (9) from the dividend after 14, then repeat: 149 / 31

Going ahead to step 3:
If we divide 149 by 31, we get 4 and a remainder of 25.
Write down 4 as next digit of the result. 
Result so far: 14.0
Subtracting 124 from 149 leaves us with 25.
Take the next digit (0) from the dividend and append it to 25, then repeat: 250 / 31

On to step 4:
250 divided by 31 is 8 with a remainder of 2.
The number 8 becomes the next digit in our result. 
Result so far: 148.0
Deduct 248 from 250 and we're left with 2.
Append the next digit (9) from the dividend to 2 and continue with: 29 / 31

Advancing to step 5:
The number 31 fits into 29 0 times, leaving a remainder of 29.
Record the quotient 0 as the next digit in the result. 
Result so far: 1480.0
The remainder is 29 after subtracting 0 from 29.
Since there are no more digits in the dividend, we add a zero to the remainder making it 290, and continue the process.

Moving on to step 6:
31 can be fit into 290 9 times, resulting in a remainder of 11.
Write down 9 as next digit of the result. 
Result so far: 1480.9
Subtracting 279 from 290 leaves us with 11.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

On to step 7:
110 divided by 31 is 3 with a remainder of 17.
Use 3 as the next digit of our solution. 
Result so far: 1480.93
Deduct 93 from 110 and we're left 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.

Going ahead to step 8:
If we divide 170 by 31, we get 5 and a remainder of 15.
The next digit of our result is 5. 
Result so far: 1480.935
If we subtract 155 from 170, we get 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Going ahead to step 9:
The number 31 fits into 150 4 times, leaving a remainder of 26.
Put 4 as the next digit of the answer. 
Result so far: 1480.9354
Subtracting 124 from 150 leaves us with 26.
Since there are no more digits in the dividend, we add a zero to the remainder making it 260, and continue the process.

On to step 10:
260 divided by 31 is 8 with a remainder of 12.
The number 8 becomes the next digit in our result. 
Result so far: 1480.93548
Subtracting 248 from 260 leaves us with 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Going ahead to step 11:
120 divided by 31 is 3 with a remainder of 27.
Use 3 as the next digit of our solution. 
Result so far: 1480.935483
Subtracting 93 from 120 leaves us with 27.
Since there are no more digits in the dividend, we add a zero to the remainder making it 270, and continue the process.

Advancing to step 12:
31 can be fit into 270 8 times, resulting in a remainder of 22.
Record the quotient 8 as the next digit in the result. 
Result so far: 1480.9354838
Subtract 248 from 270 to get 22.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

Step 13:
31 goes into 220 7 times with a remainder of 3.
The next digit of our result is 7. 
Result so far: 1480.93548387
Subtracting 217 from 220 leaves us with 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 1480.93548387 with a remaining 3e-09.