We divide 21341624 by 80
We want to figure out the number of times 21341624 can be divided by 80.

Let's proceed to step 1:
2 divided by 80 is 0 with a remainder of 2.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 2 to get 2.
Include the next digit (1) from the dividend after 2, then repeat: 21 / 80

Going ahead to step 2:
The number 80 fits into 21 0 times, leaving a remainder of 21.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 21 after subtracting 0 from 21.
Append the next digit (3) from the dividend to 21 and continue with: 213 / 80

Let's proceed to step 3:
The number 80 fits into 213 2 times, leaving a remainder of 53.
Put 2 as the next digit of the answer. 
Result so far: 2.0
If we take 160 away from 213, we end up with 53.
Bring next digit (4) of the dividend behind the 53 and repeat the process: 534 / 80

Going ahead to step 4:
When dividing 534 by 80, we get 6 with a remainder of 54.
Write down 6 as next digit of the result. 
Result so far: 26.0
If we take 480 away from 534, we end up with 54.
Append the next digit (1) from the dividend to 54 and continue with: 541 / 80

Let's proceed to step 5:
When dividing 541 by 80, we get 6 with a remainder of 61.
The number 6 becomes the next digit in our result. 
Result so far: 266.0
Subtracting 480 from 541 leaves us with 61.
Bring next digit (6) of the dividend behind the 61 and repeat the process: 616 / 80

On to step 6:
If we divide 616 by 80, we get 7 and a remainder of 56.
Record the quotient 7 as the next digit in the result. 
Result so far: 2667.0
Subtract 560 from 616 to get 56.
Append the next digit (2) from the dividend to 56 and continue with: 562 / 80

Let's proceed to step 7:
The number 80 fits into 562 7 times, leaving a remainder of 2.
Use 7 as the next digit of our solution. 
Result so far: 26677.0
If we take 560 away from 562, we end up with 2.
Grab the next digit (4) from the dividend, add it to 2, then carry on: 24 / 80

Step 8:
The number 80 fits into 24 0 times, leaving a remainder of 24.
The next digit of our result is 0. 
Result so far: 266770.0
If we take 0 away from 24, we end up with 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Step 9:
80 goes into 240 3 times with a remainder of 0.
Put 3 as the next digit of the answer. 
Result so far: 266770.3
Deduct 240 from 240 and we're left with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Advancing to step 10:
80 goes into 0 0 times with a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 266770.3
If we take 0 away from 0, we end up with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Moving on to step 11:
80 goes into 0 0 times with a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 266770.3
If we take 0 away from 0, we end up with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

The final outcome is 266770.3, with a leftover of 0.0.