Let's divide 352606 by 21
We want to figure out the number of times 352606 can be divided by 21.

Going ahead to step 1:
21 goes into 3 0 times with a remainder of 3.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 3 leaves us with 3.
Bring next digit (5) of the dividend behind the 3 and repeat the process: 35 / 21

Step 2:
The number 21 fits into 35 1 times, leaving a remainder of 14.
The next digit of our result is 1. 
Result so far: 1.0
Subtract 21 from 35 to get 14.
Include the next digit (2) from the dividend after 14, then repeat: 142 / 21

Going ahead to step 3:
The number 21 fits into 142 6 times, leaving a remainder of 16.
Write down 6 as next digit of the result. 
Result so far: 16.0
Subtracting 126 from 142 leaves us with 16.
Fetch the next digit (6) from the dividend, attach it to 16 and continue: 166 / 21

Step 4:
166 divided by 21 is 7 with a remainder of 19.
Use 7 as the next digit of our solution. 
Result so far: 167.0
Subtracting 147 from 166 leaves us with 19.
Fetch the next digit (0) from the dividend, attach it to 19 and continue: 190 / 21

Step 5:
21 can be fit into 190 9 times, resulting in a remainder of 1.
Write down 9 as next digit of the result. 
Result so far: 1679.0
Deduct 189 from 190 and we're left with 1.
Take the next digit (6) from the dividend and append it to 1, then repeat: 16 / 21

Step 6:
If we divide 16 by 21, we get 0 and a remainder of 16.
The next digit of our result is 0. 
Result so far: 16790.0
Subtract 0 from 16 to get 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Step 7:
The number 21 fits into 160 7 times, leaving a remainder of 13.
Write down 7 as next digit of the result. 
Result so far: 16790.7
Subtracting 147 from 160 leaves us 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.

Advancing to step 8:
21 goes into 130 6 times with a remainder of 4.
The next digit of our result is 6. 
Result so far: 16790.76
If we take 126 away from 130, we end up with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Step 9:
40 divided by 21 is 1 with a remainder of 19.
Write down 1 as next digit of the result. 
Result so far: 16790.761
The remainder is 19 after subtracting 21 from 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

On to step 10:
When dividing 190 by 21, we get 9 with a remainder of 1.
Record the quotient 9 as the next digit in the result. 
Result so far: 16790.7619
Subtracting 189 from 190 leaves us with 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 11:
When dividing 10 by 21, we get 0 with a remainder of 10.
Use 0 as the next digit of our solution. 
Result so far: 16790.7619
The remainder is 10 after subtracting 0 from 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Let's proceed to step 12:
21 goes into 100 4 times with a remainder of 16.
The number 4 becomes the next digit in our result. 
Result so far: 16790.761904
If we take 84 away from 100, we end up 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 13:
160 divided by 21 is 7 with a remainder of 13.
Record the quotient 7 as the next digit in the result. 
Result so far: 16790.7619047
Subtract 147 from 160 to get 13.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

Going ahead to step 14:
The number 21 fits into 130 6 times, leaving a remainder of 4.
The next digit of our result is 6. 
Result so far: 16790.76190476
Deduct 126 from 130 and we're left with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

In conclusion, the division gives 16790.76190476 with a balance of 4e-09.