Let's divide 71251209 by 644
We want to divide 71251209 by 644.

On to step 1:
7 divided by 644 is 0 with a remainder of 7.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 7 leaves us with 7.
Append the next digit (1) from the dividend to 7 and continue with: 71 / 644

Step 2:
644 goes into 71 0 times with a remainder of 71.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 71, we end up with 71.
Grab the next digit (2) from the dividend, add it to 71, then carry on: 712 / 644

Step 3:
644 can be fit into 712 1 times, resulting in a remainder of 68.
Put 1 as the next digit of the answer. 
Result so far: 1.0
Deduct 644 from 712 and we're left with 68.
Fetch the next digit (5) from the dividend, attach it to 68 and continue: 685 / 644

Step 4:
The number 644 fits into 685 1 times, leaving a remainder of 41.
Write down 1 as next digit of the result. 
Result so far: 11.0
Subtracting 644 from 685 leaves us with 41.
Take the next digit (1) from the dividend and append it to 41, then repeat: 411 / 644

Going ahead to step 5:
The number 644 fits into 411 0 times, leaving a remainder of 411.
Put 0 as the next digit of the answer. 
Result so far: 110.0
If we subtract 0 from 411, we get 411.
Take the next digit (2) from the dividend and append it to 411, then repeat: 4112 / 644

Going ahead to step 6:
When dividing 4112 by 644, we get 6 with a remainder of 248.
Record the quotient 6 as the next digit in the result. 
Result so far: 1106.0
Subtract 3864 from 4112 to get 248.
Take the next digit (0) from the dividend and append it to 248, then repeat: 2480 / 644

On to step 7:
When dividing 2480 by 644, we get 3 with a remainder of 548.
The next digit of our result is 3. 
Result so far: 11063.0
If we take 1932 away from 2480, we end up with 548.
Grab the next digit (9) from the dividend, add it to 548, then carry on: 5489 / 644

Let's proceed to step 8:
5489 divided by 644 is 8 with a remainder of 337.
Put 8 as the next digit of the answer. 
Result so far: 110638.0
The remainder is 337 after subtracting 5152 from 5489.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3370, and continue the process.

Advancing to step 9:
When dividing 3370 by 644, we get 5 with a remainder of 150.
Use 5 as the next digit of our solution. 
Result so far: 110638.5
Subtracting 3220 from 3370 leaves us with 150.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1500, and continue the process.

Going ahead to step 10:
If we divide 1500 by 644, we get 2 and a remainder of 212.
Use 2 as the next digit of our solution. 
Result so far: 110638.52
Subtracting 1288 from 1500 leaves us with 212.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2120, and continue the process.

On to step 11:
When dividing 2120 by 644, we get 3 with a remainder of 188.
Record the quotient 3 as the next digit in the result. 
Result so far: 110638.523
Subtract 1932 from 2120 to get 188.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1880, and continue the process.

Going ahead to step 12:
1880 divided by 644 is 2 with a remainder of 592.
Record the quotient 2 as the next digit in the result. 
Result so far: 110638.5232
The remainder is 592 after subtracting 1288 from 1880.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5920, and continue the process.

Step 13:
If we divide 5920 by 644, we get 9 and a remainder of 124.
The next digit of our result is 9. 
Result so far: 110638.52329
Subtract 5796 from 5920 to get 124.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1240, and continue the process.

Going ahead to step 14:
When dividing 1240 by 644, we get 1 with a remainder of 596.
Record the quotient 1 as the next digit in the result. 
Result so far: 110638.523291
Subtracting 644 from 1240 leaves us with 596.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5960, and continue the process.

Let's proceed to step 15:
5960 divided by 644 is 9 with a remainder of 164.
The next digit of our result is 9. 
Result so far: 110638.5232919
Deduct 5796 from 5960 and we're left with 164.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1640, and continue the process.

On to step 16:
If we divide 1640 by 644, we get 2 and a remainder of 352.
Record the quotient 2 as the next digit in the result. 
Result so far: 110638.52329192
Subtracting 1288 from 1640 leaves us with 352.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3520, and continue the process.

Our division results in 110638.52329192 with a remaining 3.52e-07.