Let's divide 369950 by 21
We're looking to find how many times 21 goes into 369950.

On to step 1:
21 can be fit into 3 0 times, resulting in a remainder of 3.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 3 leaves us with 3.
Grab the next digit (6) from the dividend, add it to 3, then carry on: 36 / 21

Let's proceed to step 2:
When dividing 36 by 21, we get 1 with a remainder of 15.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
If we take 21 away from 36, we end up with 15.
Include the next digit (9) from the dividend after 15, then repeat: 159 / 21

Advancing to step 3:
21 goes into 159 7 times with a remainder of 12.
Put 7 as the next digit of the answer. 
Result so far: 17.0
Subtracting 147 from 159 leaves us with 12.
Append the next digit (9) from the dividend to 12 and continue with: 129 / 21

Advancing to step 4:
21 goes into 129 6 times with a remainder of 3.
The next digit of our result is 6. 
Result so far: 176.0
Deduct 126 from 129 and we're left with 3.
Bring next digit (5) of the dividend behind the 3 and repeat the process: 35 / 21

On to step 5:
The number 21 fits into 35 1 times, leaving a remainder of 14.
Use 1 as the next digit of our solution. 
Result so far: 1761.0
If we take 21 away from 35, we end up with 14.
Bring next digit (0) of the dividend behind the 14 and repeat the process: 140 / 21

Going ahead to step 6:
The number 21 fits into 140 6 times, leaving a remainder of 14.
The number 6 becomes the next digit in our result. 
Result so far: 17616.0
If we take 126 away from 140, we end up with 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

Advancing to step 7:
21 goes into 140 6 times with a remainder of 14.
The next digit of our result is 6. 
Result so far: 17616.6
Deduct 126 from 140 and we're left with 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

On to step 8:
21 goes into 140 6 times with a remainder of 14.
The number 6 becomes the next digit in our result. 
Result so far: 17616.66
The remainder is 14 after subtracting 126 from 140.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

The final result is 17616.66 with a remainder of 0.014.