147749 ÷ 21 
Let's see how many times 21 fits into 147749.

On to step 1:
When dividing 1 by 21, we get 0 with a remainder of 1.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 1, we end up with 1.
Fetch the next digit (4) from the dividend, attach it to 1 and continue: 14 / 21

Moving on to step 2:
21 goes into 14 0 times with 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 (7) from the dividend after 14, then repeat: 147 / 21

Moving on to step 3:
If we divide 147 by 21, we get 7 and a remainder of 0.
Put 7 as the next digit of the answer. 
Result so far: 7.0
Subtracting 147 from 147 leaves us with 0.
Take the next digit (7) from the dividend and append it to 0, then repeat: 7 / 21

Going ahead to step 4:
When dividing 7 by 21, we get 0 with a remainder of 7.
Use 0 as the next digit of our solution. 
Result so far: 70.0
The remainder is 7 after subtracting 0 from 7.
Bring next digit (4) of the dividend behind the 7 and repeat the process: 74 / 21

Going ahead to step 5:
If we divide 74 by 21, we get 3 and a remainder of 11.
Record the quotient 3 as the next digit in the result. 
Result so far: 703.0
The remainder is 11 after subtracting 63 from 74.
Take the next digit (9) from the dividend and append it to 11, then repeat: 119 / 21

Going ahead to step 6:
The number 21 fits into 119 5 times, leaving a remainder of 14.
The next digit of our result is 5. 
Result so far: 7035.0
Deduct 105 from 119 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.

Moving on to step 7:
140 divided by 21 is 6 with a remainder of 14.
Use 6 as the next digit of our solution. 
Result so far: 7035.6
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.

Advancing to step 8:
140 divided by 21 is 6 with a remainder of 14.
Write down 6 as next digit of the result. 
Result so far: 7035.66
Subtracting 126 from 140 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.

Our division results in 7035.66 with a remaining 0.014.