We're dividing 71371274 by 512 
We want to figure out the number of times 71371274 can be divided by 512.

Step 1:
512 can be fit into 7 0 times, resulting in a remainder of 7.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 7 to get 7.
Fetch the next digit (1) from the dividend, attach it to 7 and continue: 71 / 512

Moving on to step 2:
The number 512 fits into 71 0 times, leaving a remainder of 71.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 71 to get 71.
Take the next digit (3) from the dividend and append it to 71, then repeat: 713 / 512

Going ahead to step 3:
When dividing 713 by 512, we get 1 with a remainder of 201.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
If we subtract 512 from 713, we get 201.
Fetch the next digit (7) from the dividend, attach it to 201 and continue: 2017 / 512

Step 4:
The number 512 fits into 2017 3 times, leaving a remainder of 481.
Write down 3 as next digit of the result. 
Result so far: 13.0
If we take 1536 away from 2017, we end up with 481.
Include the next digit (1) from the dividend after 481, then repeat: 4811 / 512

Going ahead to step 5:
When dividing 4811 by 512, we get 9 with a remainder of 203.
The number 9 becomes the next digit in our result. 
Result so far: 139.0
Subtract 4608 from 4811 to get 203.
Bring next digit (2) of the dividend behind the 203 and repeat the process: 2032 / 512

Moving on to step 6:
When dividing 2032 by 512, we get 3 with a remainder of 496.
Put 3 as the next digit of the answer. 
Result so far: 1393.0
Subtract 1536 from 2032 to get 496.
Fetch the next digit (7) from the dividend, attach it to 496 and continue: 4967 / 512

On to step 7:
4967 divided by 512 is 9 with a remainder of 359.
The next digit of our result is 9. 
Result so far: 13939.0
If we subtract 4608 from 4967, we get 359.
Bring next digit (4) of the dividend behind the 359 and repeat the process: 3594 / 512

Going ahead to step 8:
When dividing 3594 by 512, we get 7 with a remainder of 10.
Write down 7 as next digit of the result. 
Result so far: 139397.0
Subtracting 3584 from 3594 leaves us with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Advancing to step 9:
512 can be fit into 100 0 times, resulting in a remainder of 100.
Use 0 as the next digit of our solution. 
Result so far: 139397.0
Deduct 0 from 100 and we're left with 100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1000, and continue the process.

On to step 10:
The number 512 fits into 1000 1 times, leaving a remainder of 488.
Record the quotient 1 as the next digit in the result. 
Result so far: 139397.01
If we subtract 512 from 1000, we get 488.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4880, and continue the process.

Step 11:
512 goes into 4880 9 times with a remainder of 272.
The next digit of our result is 9. 
Result so far: 139397.019
If we subtract 4608 from 4880, we get 272.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2720, and continue the process.

Going ahead to step 12:
512 can be fit into 2720 5 times, resulting in a remainder of 160.
Use 5 as the next digit of our solution. 
Result so far: 139397.0195
If we take 2560 away from 2720, we end up with 160.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1600, and continue the process.

On to step 13:
If we divide 1600 by 512, we get 3 and a remainder of 64.
Write down 3 as next digit of the result. 
Result so far: 139397.01953
Deduct 1536 from 1600 and we're left with 64.
Since there are no more digits in the dividend, we add a zero to the remainder making it 640, and continue the process.

Going ahead to step 14:
If we divide 640 by 512, we get 1 and a remainder of 128.
Record the quotient 1 as the next digit in the result. 
Result so far: 139397.019531
Subtract 512 from 640 to get 128.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1280, and continue the process.

Advancing to step 15:
1280 divided by 512 is 2 with a remainder of 256.
Use 2 as the next digit of our solution. 
Result so far: 139397.0195312
Subtracting 1024 from 1280 leaves us with 256.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2560, and continue the process.

Let's proceed to step 16:
512 goes into 2560 5 times with a remainder of 0.
Put 5 as the next digit of the answer. 
Result so far: 139397.01953125
If we take 2560 away from 2560, we end up with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

The final result is 139397.01953125 with a remainder of 0.0.