148946 ÷ 21 
Let's see how many times 21 fits into 148946.

Going ahead to step 1:
1 divided by 21 is 0 with a remainder of 1.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 1 leaves us with 1.
Include the next digit (4) from the dividend after 1, then repeat: 14 / 21

Advancing to step 2:
21 can be fit into 14 0 times, resulting in a remainder of 14.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 14 to get 14.
Include the next digit (8) from the dividend after 14, then repeat: 148 / 21

Let's proceed to step 3:
When dividing 148 by 21, we get 7 with a remainder of 1.
Use 7 as the next digit of our solution. 
Result so far: 7.0
If we subtract 147 from 148, we get 1.
Take the next digit (9) from the dividend and append it to 1, then repeat: 19 / 21

On to step 4:
21 goes into 19 0 times with a remainder of 19.
The next digit of our result is 0. 
Result so far: 70.0
Subtract 0 from 19 to get 19.
Take the next digit (4) from the dividend and append it to 19, then repeat: 194 / 21

Going ahead to step 5:
21 can be fit into 194 9 times, resulting in a remainder of 5.
Put 9 as the next digit of the answer. 
Result so far: 709.0
Subtract 189 from 194 to get 5.
Bring next digit (6) of the dividend behind the 5 and repeat the process: 56 / 21

Moving on to step 6:
21 goes into 56 2 times with a remainder of 14.
Put 2 as the next digit of the answer. 
Result so far: 7092.0
Deduct 42 from 56 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.

Step 7:
The number 21 fits into 140 6 times, leaving a remainder of 14.
Put 6 as the next digit of the answer. 
Result so far: 7092.6
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.

On to step 8:
21 goes into 140 6 times with a remainder of 14.
Write down 6 as next digit of the result. 
Result so far: 7092.66
Subtract 126 from 140 to get 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

In conclusion, the division gives 7092.66 with a balance of 0.014.