We're dividing 51438509 by 647 
We're looking to find how many times 647 goes into 51438509.

Step 1:
When dividing 5 by 647, we get 0 with a remainder of 5.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 5, we get 5.
Fetch the next digit (1) from the dividend, attach it to 5 and continue: 51 / 647

Step 2:
647 goes into 51 0 times with a remainder of 51.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 51, we end up with 51.
Include the next digit (4) from the dividend after 51, then repeat: 514 / 647

Advancing to step 3:
514 divided by 647 is 0 with a remainder of 514.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 514 and we're left with 514.
Include the next digit (3) from the dividend after 514, then repeat: 5143 / 647

Going ahead to step 4:
5143 divided by 647 is 7 with a remainder of 614.
The next digit of our result is 7. 
Result so far: 7.0
If we subtract 4529 from 5143, we get 614.
Grab the next digit (8) from the dividend, add it to 614, then carry on: 6148 / 647

Going ahead to step 5:
6148 divided by 647 is 9 with a remainder of 325.
Write down 9 as next digit of the result. 
Result so far: 79.0
Subtract 5823 from 6148 to get 325.
Append the next digit (5) from the dividend to 325 and continue with: 3255 / 647

Going ahead to step 6:
If we divide 3255 by 647, we get 5 and a remainder of 20.
The number 5 becomes the next digit in our result. 
Result so far: 795.0
If we take 3235 away from 3255, we end up with 20.
Fetch the next digit (0) from the dividend, attach it to 20 and continue: 200 / 647

Step 7:
If we divide 200 by 647, we get 0 and a remainder of 200.
The next digit of our result is 0. 
Result so far: 7950.0
If we subtract 0 from 200, we get 200.
Bring next digit (9) of the dividend behind the 200 and repeat the process: 2009 / 647

Step 8:
2009 divided by 647 is 3 with a remainder of 68.
Record the quotient 3 as the next digit in the result. 
Result so far: 79503.0
If we subtract 1941 from 2009, we get 68.
Since there are no more digits in the dividend, we add a zero to the remainder making it 680, and continue the process.

Let's proceed to step 9:
647 goes into 680 1 times with a remainder of 33.
The number 1 becomes the next digit in our result. 
Result so far: 79503.1
If we take 647 away from 680, we end up with 33.
Since there are no more digits in the dividend, we add a zero to the remainder making it 330, and continue the process.

Step 10:
330 divided by 647 is 0 with a remainder of 330.
Write down 0 as next digit of the result. 
Result so far: 79503.1
If we take 0 away from 330, 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.

Step 11:
647 goes into 3300 5 times with a remainder of 65.
Write down 5 as next digit of the result. 
Result so far: 79503.105
Subtract 3235 from 3300 to get 65.
Since there are no more digits in the dividend, we add a zero to the remainder making it 650, and continue the process.

Going ahead to step 12:
When dividing 650 by 647, we get 1 with a remainder of 3.
The next digit of our result is 1. 
Result so far: 79503.1051
The remainder is 3 after subtracting 647 from 650.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

On to step 13:
The number 647 fits into 30 0 times, leaving a remainder of 30.
Use 0 as the next digit of our solution. 
Result so far: 79503.1051
Deduct 0 from 30 and we're left with 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Advancing to step 14:
647 goes into 300 0 times with a remainder of 300.
The next digit of our result is 0. 
Result so far: 79503.1051
Subtract 0 from 300 to get 300.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3000, and continue the process.

After the division, we end up with 79503.1051 and a remainder of 3e-05.