148316 divided by 21 
We want to figure out the number of times 148316 can be divided by 21.

Step 1:
1 divided by 21 is 0 with a remainder of 1.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 1 and we're left with 1.
Grab the next digit (4) from the dividend, add it to 1, then carry on: 14 / 21

Step 2:
The number 21 fits into 14 0 times, leaving a remainder of 14.
Write down 0 as next digit of the result. 
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

Going ahead to step 3:
The number 21 fits into 148 7 times, leaving a remainder of 1.
Write down 7 as next digit of the result. 
Result so far: 7.0
Deduct 147 from 148 and we're left with 1.
Include the next digit (3) from the dividend after 1, then repeat: 13 / 21

Going ahead to step 4:
If we divide 13 by 21, we get 0 and a remainder of 13.
Write down 0 as next digit of the result. 
Result so far: 70.0
If we subtract 0 from 13, we get 13.
Grab the next digit (1) from the dividend, add it to 13, then carry on: 131 / 21

Moving on to step 5:
When dividing 131 by 21, we get 6 with a remainder of 5.
Write down 6 as next digit of the result. 
Result so far: 706.0
Subtract 126 from 131 to get 5.
Include the next digit (6) from the dividend after 5, then repeat: 56 / 21

Advancing to step 6:
If we divide 56 by 21, we get 2 and a remainder of 14.
Record the quotient 2 as the next digit in the result. 
Result so far: 7062.0
Subtracting 42 from 56 leaves us 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 7:
140 divided by 21 is 6 with a remainder of 14.
The number 6 becomes the next digit in our result. 
Result so far: 7062.6
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.

Moving on to step 8:
140 divided by 21 is 6 with a remainder of 14.
Use 6 as the next digit of our solution. 
Result so far: 7062.66
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.

The final result is 7062.66 with a remainder of 0.014.