22521260 ÷ 144 
We want to figure out the number of times 22521260 can be divided by 144.

Let's proceed to step 1:
144 can be fit into 2 0 times, resulting in a remainder of 2.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 2, we get 2.
Take the next digit (2) from the dividend and append it to 2, then repeat: 22 / 144

Advancing to step 2:
When dividing 22 by 144, we get 0 with a remainder of 22.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 22 and we're left with 22.
Fetch the next digit (5) from the dividend, attach it to 22 and continue: 225 / 144

Moving on to step 3:
When dividing 225 by 144, we get 1 with a remainder of 81.
Use 1 as the next digit of our solution. 
Result so far: 1.0
If we take 144 away from 225, we end up with 81.
Grab the next digit (2) from the dividend, add it to 81, then carry on: 812 / 144

Going ahead to step 4:
144 goes into 812 5 times with a remainder of 92.
The next digit of our result is 5. 
Result so far: 15.0
Subtracting 720 from 812 leaves us with 92.
Append the next digit (1) from the dividend to 92 and continue with: 921 / 144

Step 5:
144 goes into 921 6 times with a remainder of 57.
Put 6 as the next digit of the answer. 
Result so far: 156.0
The remainder is 57 after subtracting 864 from 921.
Grab the next digit (2) from the dividend, add it to 57, then carry on: 572 / 144

Going ahead to step 6:
144 goes into 572 3 times with a remainder of 140.
The number 3 becomes the next digit in our result. 
Result so far: 1563.0
If we subtract 432 from 572, we get 140.
Fetch the next digit (6) from the dividend, attach it to 140 and continue: 1406 / 144

Let's proceed to step 7:
When dividing 1406 by 144, we get 9 with a remainder of 110.
The next digit of our result is 9. 
Result so far: 15639.0
If we subtract 1296 from 1406, we get 110.
Grab the next digit (0) from the dividend, add it to 110, then carry on: 1100 / 144

Step 8:
When dividing 1100 by 144, we get 7 with a remainder of 92.
The number 7 becomes the next digit in our result. 
Result so far: 156397.0
Subtracting 1008 from 1100 leaves us with 92.
Since there are no more digits in the dividend, we add a zero to the remainder making it 920, and continue the process.

Moving on to step 9:
144 goes into 920 6 times with a remainder of 56.
Record the quotient 6 as the next digit in the result. 
Result so far: 156397.6
Subtract 864 from 920 to get 56.
Since there are no more digits in the dividend, we add a zero to the remainder making it 560, and continue the process.

Moving on to step 10:
144 goes into 560 3 times with a remainder of 128.
The next digit of our result is 3. 
Result so far: 156397.63
If we subtract 432 from 560, we get 128.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1280, and continue the process.

Step 11:
1280 divided by 144 is 8 with a remainder of 128.
The number 8 becomes the next digit in our result. 
Result so far: 156397.638
If we take 1152 away from 1280, we end up with 128.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1280, and continue the process.

Advancing to step 12:
1280 divided by 144 is 8 with a remainder of 128.
The next digit of our result is 8. 
Result so far: 156397.6388
Subtract 1152 from 1280 to get 128.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1280, and continue the process.

The final result is 156397.6388 with a remainder of 0.00128.