21499133 ÷ 13 
We want to figure out the number of times 21499133 can be divided by 13.

Advancing to step 1:
If we divide 2 by 13, we get 0 and a remainder of 2.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 2 and we're left with 2.
Fetch the next digit (1) from the dividend, attach it to 2 and continue: 21 / 13

On to step 2:
If we divide 21 by 13, we get 1 and a remainder of 8.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
Subtracting 13 from 21 leaves us with 8.
Fetch the next digit (4) from the dividend, attach it to 8 and continue: 84 / 13

Advancing to step 3:
13 can be fit into 84 6 times, resulting in a remainder of 6.
Write down 6 as next digit of the result. 
Result so far: 16.0
Deduct 78 from 84 and we're left with 6.
Fetch the next digit (9) from the dividend, attach it to 6 and continue: 69 / 13

Step 4:
When dividing 69 by 13, we get 5 with a remainder of 4.
The number 5 becomes the next digit in our result. 
Result so far: 165.0
The remainder is 4 after subtracting 65 from 69.
Fetch the next digit (9) from the dividend, attach it to 4 and continue: 49 / 13

On to step 5:
49 divided by 13 is 3 with a remainder of 10.
Record the quotient 3 as the next digit in the result. 
Result so far: 1653.0
If we subtract 39 from 49, we get 10.
Append the next digit (1) from the dividend to 10 and continue with: 101 / 13

On to step 6:
When dividing 101 by 13, we get 7 with a remainder of 10.
The next digit of our result is 7. 
Result so far: 16537.0
If we take 91 away from 101, we end up with 10.
Take the next digit (3) from the dividend and append it to 10, then repeat: 103 / 13

Going ahead to step 7:
103 divided by 13 is 7 with a remainder of 12.
The next digit of our result is 7. 
Result so far: 165377.0
Deduct 91 from 103 and we're left with 12.
Fetch the next digit (3) from the dividend, attach it to 12 and continue: 123 / 13

Going ahead to step 8:
When dividing 123 by 13, we get 9 with a remainder of 6.
The number 9 becomes the next digit in our result. 
Result so far: 1653779.0
The remainder is 6 after subtracting 117 from 123.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Moving on to step 9:
The number 13 fits into 60 4 times, leaving a remainder of 8.
Use 4 as the next digit of our solution. 
Result so far: 1653779.4
Deduct 52 from 60 and we're left with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Moving on to step 10:
80 divided by 13 is 6 with a remainder of 2.
The next digit of our result is 6. 
Result so far: 1653779.46
Deduct 78 from 80 and we're left with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

On to step 11:
13 goes into 20 1 times with a remainder of 7.
The number 1 becomes the next digit in our result. 
Result so far: 1653779.461
If we take 13 away from 20, we end up with 7.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

Advancing to step 12:
When dividing 70 by 13, we get 5 with a remainder of 5.
Record the quotient 5 as the next digit in the result. 
Result so far: 1653779.4615
Subtract 65 from 70 to get 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Let's proceed to step 13:
13 goes into 50 3 times with a remainder of 11.
The next digit of our result is 3. 
Result so far: 1653779.46153
The remainder is 11 after subtracting 39 from 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

Moving on to step 14:
If we divide 110 by 13, we get 8 and a remainder of 6.
Write down 8 as next digit of the result. 
Result so far: 1653779.461538
Subtracting 104 from 110 leaves us with 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Let's proceed to step 15:
The number 13 fits into 60 4 times, leaving a remainder of 8.
Record the quotient 4 as the next digit in the result. 
Result so far: 1653779.4615384
Subtract 52 from 60 to get 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Let's proceed to step 16:
When dividing 80 by 13, we get 6 with a remainder of 2.
The next digit of our result is 6. 
Result so far: 1653779.46153846
If we subtract 78 from 80, we get 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Our division results in 1653779.46153846 with a remaining 2e-09.