13960343 ÷ 486 
Let's see how many times 486 fits into 13960343.

Moving on to step 1:
When dividing 1 by 486, we get 0 with a remainder of 1.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 1 and we're left with 1.
Append the next digit (3) from the dividend to 1 and continue with: 13 / 486

Going ahead to step 2:
The number 486 fits into 13 0 times, leaving a remainder of 13.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 13, we end up with 13.
Include the next digit (9) from the dividend after 13, then repeat: 139 / 486

Let's proceed to step 3:
139 divided by 486 is 0 with a remainder of 139.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 139 leaves us with 139.
Fetch the next digit (6) from the dividend, attach it to 139 and continue: 1396 / 486

On to step 4:
When dividing 1396 by 486, we get 2 with a remainder of 424.
The next digit of our result is 2. 
Result so far: 2.0
Subtract 972 from 1396 to get 424.
Append the next digit (0) from the dividend to 424 and continue with: 4240 / 486

Going ahead to step 5:
486 goes into 4240 8 times with a remainder of 352.
Put 8 as the next digit of the answer. 
Result so far: 28.0
Subtracting 3888 from 4240 leaves us with 352.
Fetch the next digit (3) from the dividend, attach it to 352 and continue: 3523 / 486

Step 6:
The number 486 fits into 3523 7 times, leaving a remainder of 121.
Use 7 as the next digit of our solution. 
Result so far: 287.0
The remainder is 121 after subtracting 3402 from 3523.
Take the next digit (4) from the dividend and append it to 121, then repeat: 1214 / 486

Advancing to step 7:
When dividing 1214 by 486, we get 2 with a remainder of 242.
The number 2 becomes the next digit in our result. 
Result so far: 2872.0
If we subtract 972 from 1214, we get 242.
Include the next digit (3) from the dividend after 242, then repeat: 2423 / 486

Let's proceed to step 8:
2423 divided by 486 is 4 with a remainder of 479.
Use 4 as the next digit of our solution. 
Result so far: 28724.0
If we take 1944 away from 2423, we end up with 479.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4790, and continue the process.

Step 9:
If we divide 4790 by 486, we get 9 and a remainder of 416.
Write down 9 as next digit of the result. 
Result so far: 28724.9
If we subtract 4374 from 4790, we get 416.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4160, and continue the process.

On to step 10:
486 goes into 4160 8 times with a remainder of 272.
Record the quotient 8 as the next digit in the result. 
Result so far: 28724.98
If we subtract 3888 from 4160, we get 272.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2720, and continue the process.

Moving on to step 11:
2720 divided by 486 is 5 with a remainder of 290.
The number 5 becomes the next digit in our result. 
Result so far: 28724.985
Subtract 2430 from 2720 to get 290.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2900, and continue the process.

Step 12:
The number 486 fits into 2900 5 times, leaving a remainder of 470.
The number 5 becomes the next digit in our result. 
Result so far: 28724.9855
Deduct 2430 from 2900 and we're left with 470.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4700, and continue the process.

The quotient of the division is 28724.9855, and the remainder is 0.0047.