355943 divided by 15 
Our goal is to divide 355943 by 15.

Advancing to step 1:
3 divided by 15 is 0 with a remainder of 3.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 3 after subtracting 0 from 3.
Include the next digit (5) from the dividend after 3, then repeat: 35 / 15

Step 2:
15 goes into 35 2 times with a remainder of 5.
The number 2 becomes the next digit in our result. 
Result so far: 2.0
Subtracting 30 from 35 leaves us with 5.
Bring next digit (5) of the dividend behind the 5 and repeat the process: 55 / 15

Step 3:
55 divided by 15 is 3 with a remainder of 10.
Record the quotient 3 as the next digit in the result. 
Result so far: 23.0
If we subtract 45 from 55, we get 10.
Take the next digit (9) from the dividend and append it to 10, then repeat: 109 / 15

Step 4:
If we divide 109 by 15, we get 7 and a remainder of 4.
Use 7 as the next digit of our solution. 
Result so far: 237.0
If we take 105 away from 109, we end up with 4.
Grab the next digit (4) from the dividend, add it to 4, then carry on: 44 / 15

Advancing to step 5:
15 can be fit into 44 2 times, resulting in a remainder of 14.
Write down 2 as next digit of the result. 
Result so far: 2372.0
Subtract 30 from 44 to get 14.
Include the next digit (3) from the dividend after 14, then repeat: 143 / 15

Advancing to step 6:
The number 15 fits into 143 9 times, leaving a remainder of 8.
Write down 9 as next digit of the result. 
Result so far: 23729.0
Subtract 135 from 143 to get 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Going ahead to step 7:
The number 15 fits into 80 5 times, leaving a remainder of 5.
Use 5 as the next digit of our solution. 
Result so far: 23729.5
Deduct 75 from 80 and we're left with 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Advancing to step 8:
15 can be fit into 50 3 times, resulting in a remainder of 5.
The next digit of our result is 3. 
Result so far: 23729.53
If we subtract 45 from 50, we get 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Step 9:
When dividing 50 by 15, we get 3 with a remainder of 5.
The next digit of our result is 3. 
Result so far: 23729.533
If we subtract 45 from 50, we get 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

The quotient of the division is 23729.533, and the remainder is 0.0005.