We look at the division of 22421465 by 644 
We're looking to find how many times 644 goes into 22421465.

Let's proceed to step 1:
When dividing 2 by 644, we get 0 with a remainder of 2.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 2, we get 2.
Append the next digit (2) from the dividend to 2 and continue with: 22 / 644

Advancing to step 2:
If we divide 22 by 644, we get 0 and a remainder of 22.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 22 to get 22.
Grab the next digit (4) from the dividend, add it to 22, then carry on: 224 / 644

Moving on to step 3:
644 goes into 224 0 times with a remainder of 224.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 224, we get 224.
Append the next digit (2) from the dividend to 224 and continue with: 2242 / 644

Advancing to step 4:
If we divide 2242 by 644, we get 3 and a remainder of 310.
Put 3 as the next digit of the answer. 
Result so far: 3.0
Subtract 1932 from 2242 to get 310.
Bring next digit (1) of the dividend behind the 310 and repeat the process: 3101 / 644

Going ahead to step 5:
If we divide 3101 by 644, we get 4 and a remainder of 525.
Put 4 as the next digit of the answer. 
Result so far: 34.0
If we take 2576 away from 3101, we end up with 525.
Fetch the next digit (4) from the dividend, attach it to 525 and continue: 5254 / 644

Going ahead to step 6:
When dividing 5254 by 644, we get 8 with a remainder of 102.
Write down 8 as next digit of the result. 
Result so far: 348.0
Subtract 5152 from 5254 to get 102.
Bring next digit (6) of the dividend behind the 102 and repeat the process: 1026 / 644

Moving on to step 7:
The number 644 fits into 1026 1 times, leaving a remainder of 382.
The next digit of our result is 1. 
Result so far: 3481.0
The remainder is 382 after subtracting 644 from 1026.
Fetch the next digit (5) from the dividend, attach it to 382 and continue: 3825 / 644

Moving on to step 8:
The number 644 fits into 3825 5 times, leaving a remainder of 605.
Record the quotient 5 as the next digit in the result. 
Result so far: 34815.0
The remainder is 605 after subtracting 3220 from 3825.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6050, and continue the process.

Going ahead to step 9:
If we divide 6050 by 644, we get 9 and a remainder of 254.
Put 9 as the next digit of the answer. 
Result so far: 34815.9
Subtracting 5796 from 6050 leaves us with 254.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2540, and continue the process.

Going ahead to step 10:
644 can be fit into 2540 3 times, resulting in a remainder of 608.
Use 3 as the next digit of our solution. 
Result so far: 34815.93
If we subtract 1932 from 2540, we get 608.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6080, and continue the process.

Step 11:
The number 644 fits into 6080 9 times, leaving a remainder of 284.
Write down 9 as next digit of the result. 
Result so far: 34815.939
Subtract 5796 from 6080 to get 284.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2840, and continue the process.

Let's proceed to step 12:
2840 divided by 644 is 4 with a remainder of 264.
Write down 4 as next digit of the result. 
Result so far: 34815.9394
If we subtract 2576 from 2840, we get 264.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2640, and continue the process.

Going ahead to step 13:
2640 divided by 644 is 4 with a remainder of 64.
Record the quotient 4 as the next digit in the result. 
Result so far: 34815.93944
The remainder is 64 after subtracting 2576 from 2640.
Since there are no more digits in the dividend, we add a zero to the remainder making it 640, and continue the process.

The final outcome is 34815.93944, with a leftover of 6.4e-05.