Let's divide 3606229 by 21
We want to figure out the number of times 3606229 can be divided by 21.

Going ahead to step 1:
If we divide 3 by 21, we get 0 and a remainder of 3.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 3 after subtracting 0 from 3.
Take the next digit (6) from the dividend and append it to 3, then repeat: 36 / 21

Going ahead to step 2:
The number 21 fits into 36 1 times, leaving a remainder of 15.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
The remainder is 15 after subtracting 21 from 36.
Include the next digit (0) from the dividend after 15, then repeat: 150 / 21

Moving on to step 3:
150 divided by 21 is 7 with a remainder of 3.
Put 7 as the next digit of the answer. 
Result so far: 17.0
The remainder is 3 after subtracting 147 from 150.
Grab the next digit (6) from the dividend, add it to 3, then carry on: 36 / 21

On to step 4:
If we divide 36 by 21, we get 1 and a remainder of 15.
Record the quotient 1 as the next digit in the result. 
Result so far: 171.0
Subtracting 21 from 36 leaves us with 15.
Include the next digit (2) from the dividend after 15, then repeat: 152 / 21

Advancing to step 5:
21 goes into 152 7 times with a remainder of 5.
The number 7 becomes the next digit in our result. 
Result so far: 1717.0
If we take 147 away from 152, we end up with 5.
Bring next digit (2) of the dividend behind the 5 and repeat the process: 52 / 21

Moving on to step 6:
When dividing 52 by 21, we get 2 with a remainder of 10.
Put 2 as the next digit of the answer. 
Result so far: 17172.0
Subtract 42 from 52 to get 10.
Grab the next digit (9) from the dividend, add it to 10, then carry on: 109 / 21

On to step 7:
The number 21 fits into 109 5 times, leaving a remainder of 4.
Put 5 as the next digit of the answer. 
Result so far: 171725.0
Subtract 105 from 109 to get 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Moving on to step 8:
When dividing 40 by 21, we get 1 with a remainder of 19.
Use 1 as the next digit of our solution. 
Result so far: 171725.1
Subtract 21 from 40 to get 19.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

Advancing to step 9:
The number 21 fits into 190 9 times, leaving a remainder of 1.
The next digit of our result is 9. 
Result so far: 171725.19
Subtract 189 from 190 to get 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Step 10:
If we divide 10 by 21, we get 0 and a remainder of 10.
Put 0 as the next digit of the answer. 
Result so far: 171725.19
Subtracting 0 from 10 leaves us with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

On to step 11:
The number 21 fits into 100 4 times, leaving a remainder of 16.
Put 4 as the next digit of the answer. 
Result so far: 171725.1904
Subtracting 84 from 100 leaves us with 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Going ahead to step 12:
The number 21 fits into 160 7 times, leaving a remainder of 13.
Use 7 as the next digit of our solution. 
Result so far: 171725.19047
Deduct 147 from 160 and we're left with 13.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

Moving on to step 13:
21 goes into 130 6 times with a remainder of 4.
Use 6 as the next digit of our solution. 
Result so far: 171725.190476
Subtract 126 from 130 to get 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

On to step 14:
21 goes into 40 1 times with a remainder of 19.
Record the quotient 1 as the next digit in the result. 
Result so far: 171725.1904761
If we take 21 away from 40, we end up with 19.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

Advancing to step 15:
When dividing 190 by 21, we get 9 with a remainder of 1.
The number 9 becomes the next digit in our result. 
Result so far: 171725.19047619
The remainder is 1 after subtracting 189 from 190.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

The final outcome is 171725.19047619, with a leftover of 1e-09.