We divide 34223159 by 644
Our goal is to divide 34223159 by 644.

Let's proceed to step 1:
3 divided by 644 is 0 with a remainder of 3.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 3 and we're left with 3.
Fetch the next digit (4) from the dividend, attach it to 3 and continue: 34 / 644

Going ahead to step 2:
34 divided by 644 is 0 with a remainder of 34.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 34 to get 34.
Fetch the next digit (2) from the dividend, attach it to 34 and continue: 342 / 644

Let's proceed to step 3:
644 goes into 342 0 times with a remainder of 342.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 342 and we're left with 342.
Grab the next digit (2) from the dividend, add it to 342, then carry on: 3422 / 644

Advancing to step 4:
644 goes into 3422 5 times with a remainder of 202.
Use 5 as the next digit of our solution. 
Result so far: 5.0
If we take 3220 away from 3422, we end up with 202.
Append the next digit (3) from the dividend to 202 and continue with: 2023 / 644

Going ahead to step 5:
644 can be fit into 2023 3 times, resulting in a remainder of 91.
Put 3 as the next digit of the answer. 
Result so far: 53.0
Subtract 1932 from 2023 to get 91.
Take the next digit (1) from the dividend and append it to 91, then repeat: 911 / 644

On to step 6:
If we divide 911 by 644, we get 1 and a remainder of 267.
Record the quotient 1 as the next digit in the result. 
Result so far: 531.0
Deduct 644 from 911 and we're left with 267.
Append the next digit (5) from the dividend to 267 and continue with: 2675 / 644

Advancing to step 7:
644 can be fit into 2675 4 times, resulting in a remainder of 99.
Write down 4 as next digit of the result. 
Result so far: 5314.0
Subtract 2576 from 2675 to get 99.
Append the next digit (9) from the dividend to 99 and continue with: 999 / 644

Step 8:
If we divide 999 by 644, we get 1 and a remainder of 355.
Put 1 as the next digit of the answer. 
Result so far: 53141.0
Deduct 644 from 999 and we're left with 355.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3550, and continue the process.

Moving on to step 9:
When dividing 3550 by 644, we get 5 with a remainder of 330.
The number 5 becomes the next digit in our result. 
Result so far: 53141.5
If we take 3220 away from 3550, we end up with 330.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3300, and continue the process.

Moving on to step 10:
644 can be fit into 3300 5 times, resulting in a remainder of 80.
Use 5 as the next digit of our solution. 
Result so far: 53141.55
If we take 3220 away from 3300, we end up with 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

The final outcome is 53141.55, with a leftover of 0.08.