71946626 ÷ 644 
We want to divide 71946626 by 644.

Step 1:
If we divide 7 by 644, we get 0 and a remainder of 7.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 7, we end up with 7.
Grab the next digit (1) from the dividend, add it to 7, then carry on: 71 / 644

On to step 2:
71 divided by 644 is 0 with a remainder of 71.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 71, we get 71.
Grab the next digit (9) from the dividend, add it to 71, then carry on: 719 / 644

Moving on to step 3:
644 can be fit into 719 1 times, resulting in a remainder of 75.
Use 1 as the next digit of our solution. 
Result so far: 1.0
Subtracting 644 from 719 leaves us with 75.
Grab the next digit (4) from the dividend, add it to 75, then carry on: 754 / 644

Let's proceed to step 4:
When dividing 754 by 644, we get 1 with a remainder of 110.
Write down 1 as next digit of the result. 
Result so far: 11.0
If we take 644 away from 754, we end up with 110.
Fetch the next digit (6) from the dividend, attach it to 110 and continue: 1106 / 644

Step 5:
644 goes into 1106 1 times with a remainder of 462.
Use 1 as the next digit of our solution. 
Result so far: 111.0
The remainder is 462 after subtracting 644 from 1106.
Take the next digit (6) from the dividend and append it to 462, then repeat: 4626 / 644

On to step 6:
If we divide 4626 by 644, we get 7 and a remainder of 118.
The next digit of our result is 7. 
Result so far: 1117.0
If we subtract 4508 from 4626, we get 118.
Bring next digit (2) of the dividend behind the 118 and repeat the process: 1182 / 644

On to step 7:
644 goes into 1182 1 times with a remainder of 538.
Put 1 as the next digit of the answer. 
Result so far: 11171.0
Subtract 644 from 1182 to get 538.
Grab the next digit (6) from the dividend, add it to 538, then carry on: 5386 / 644

Going ahead to step 8:
5386 divided by 644 is 8 with a remainder of 234.
Use 8 as the next digit of our solution. 
Result so far: 111718.0
If we take 5152 away from 5386, we end up with 234.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2340, and continue the process.

Moving on to step 9:
644 can be fit into 2340 3 times, resulting in a remainder of 408.
Record the quotient 3 as the next digit in the result. 
Result so far: 111718.3
Subtracting 1932 from 2340 leaves us with 408.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4080, and continue the process.

Moving on to step 10:
The number 644 fits into 4080 6 times, leaving a remainder of 216.
Record the quotient 6 as the next digit in the result. 
Result so far: 111718.36
Deduct 3864 from 4080 and we're left with 216.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2160, and continue the process.

Step 11:
644 can be fit into 2160 3 times, resulting in a remainder of 228.
Use 3 as the next digit of our solution. 
Result so far: 111718.363
If we subtract 1932 from 2160, we get 228.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2280, and continue the process.

On to step 12:
644 can be fit into 2280 3 times, resulting in a remainder of 348.
Put 3 as the next digit of the answer. 
Result so far: 111718.3633
Subtract 1932 from 2280 to get 348.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3480, and continue the process.

The final outcome is 111718.3633, with a leftover of 0.00348.