104534 ÷ 21 
We're looking to find how many times 21 goes into 104534.

Moving on to step 1:
21 can be fit into 1 0 times, resulting in a remainder of 1.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 1 and we're left with 1.
Grab the next digit (0) from the dividend, add it to 1, then carry on: 10 / 21

Going ahead to step 2:
The number 21 fits into 10 0 times, leaving a remainder of 10.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 10 after subtracting 0 from 10.
Include the next digit (4) from the dividend after 10, then repeat: 104 / 21

On to step 3:
21 can be fit into 104 4 times, resulting in a remainder of 20.
The number 4 becomes the next digit in our result. 
Result so far: 4.0
If we take 84 away from 104, we end up with 20.
Append the next digit (5) from the dividend to 20 and continue with: 205 / 21

Let's proceed to step 4:
The number 21 fits into 205 9 times, leaving a remainder of 16.
Put 9 as the next digit of the answer. 
Result so far: 49.0
Deduct 189 from 205 and we're left with 16.
Fetch the next digit (3) from the dividend, attach it to 16 and continue: 163 / 21

Let's proceed to step 5:
21 can be fit into 163 7 times, resulting in a remainder of 16.
Put 7 as the next digit of the answer. 
Result so far: 497.0
Subtracting 147 from 163 leaves us with 16.
Bring next digit (4) of the dividend behind the 16 and repeat the process: 164 / 21

On to step 6:
When dividing 164 by 21, we get 7 with a remainder of 17.
Put 7 as the next digit of the answer. 
Result so far: 4977.0
Subtract 147 from 164 to get 17.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

Moving on to step 7:
When dividing 170 by 21, we get 8 with a remainder of 2.
Write down 8 as next digit of the result. 
Result so far: 4977.8
The remainder is 2 after subtracting 168 from 170.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Moving on to step 8:
21 goes into 20 0 times with a remainder of 20.
Use 0 as the next digit of our solution. 
Result so far: 4977.8
The remainder is 20 after subtracting 0 from 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Going ahead to step 9:
21 can be fit into 200 9 times, resulting in a remainder of 11.
Use 9 as the next digit of our solution. 
Result so far: 4977.809
If we take 189 away from 200, we end up 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.

Moving on to step 10:
110 divided by 21 is 5 with a remainder of 5.
The number 5 becomes the next digit in our result. 
Result so far: 4977.8095
Deduct 105 from 110 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.

Going ahead to step 11:
21 goes into 50 2 times with a remainder of 8.
The next digit of our result is 2. 
Result so far: 4977.80952
Deduct 42 from 50 and we're left with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Let's proceed to step 12:
21 goes into 80 3 times with a remainder of 17.
The number 3 becomes the next digit in our result. 
Result so far: 4977.809523
Deduct 63 from 80 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.

On to step 13:
When dividing 170 by 21, we get 8 with a remainder of 2.
Put 8 as the next digit of the answer. 
Result so far: 4977.8095238
If we subtract 168 from 170, we get 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

On to step 14:
When dividing 20 by 21, we get 0 with a remainder of 20.
The next digit of our result is 0. 
Result so far: 4977.8095238
Deduct 0 from 20 and we're left with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Our division results in 4977.8095238 with a remaining 2e-08.