We're dividing 9013501 by 644 
Our goal is to divide 9013501 by 644.

Advancing to step 1:
644 goes into 9 0 times with a remainder of 9.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 9 to get 9.
Append the next digit (0) from the dividend to 9 and continue with: 90 / 644

Moving on to step 2:
644 goes into 90 0 times with a remainder of 90.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 90 leaves us with 90.
Grab the next digit (1) from the dividend, add it to 90, then carry on: 901 / 644

Advancing to step 3:
644 goes into 901 1 times with a remainder of 257.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
The remainder is 257 after subtracting 644 from 901.
Take the next digit (3) from the dividend and append it to 257, then repeat: 2573 / 644

Step 4:
If we divide 2573 by 644, we get 3 and a remainder of 641.
The next digit of our result is 3. 
Result so far: 13.0
Subtract 1932 from 2573 to get 641.
Include the next digit (5) from the dividend after 641, then repeat: 6415 / 644

Let's proceed to step 5:
The number 644 fits into 6415 9 times, leaving a remainder of 619.
The next digit of our result is 9. 
Result so far: 139.0
Subtract 5796 from 6415 to get 619.
Append the next digit (0) from the dividend to 619 and continue with: 6190 / 644

Step 6:
The number 644 fits into 6190 9 times, leaving a remainder of 394.
The next digit of our result is 9. 
Result so far: 1399.0
Deduct 5796 from 6190 and we're left with 394.
Include the next digit (1) from the dividend after 394, then repeat: 3941 / 644

Let's proceed to step 7:
The number 644 fits into 3941 6 times, leaving a remainder of 77.
Record the quotient 6 as the next digit in the result. 
Result so far: 13996.0
Subtracting 3864 from 3941 leaves us with 77.
Since there are no more digits in the dividend, we add a zero to the remainder making it 770, and continue the process.

Step 8:
When dividing 770 by 644, we get 1 with a remainder of 126.
The next digit of our result is 1. 
Result so far: 13996.1
Subtracting 644 from 770 leaves us with 126.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1260, and continue the process.

Advancing to step 9:
When dividing 1260 by 644, we get 1 with a remainder of 616.
Write down 1 as next digit of the result. 
Result so far: 13996.11
If we take 644 away from 1260, we end up with 616.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6160, and continue the process.

Our division results in 13996.11 with a remaining 0.616.