86025702 ÷ 509 
We want to divide 86025702 by 509.

Advancing to step 1:
509 can be fit into 8 0 times, resulting in a remainder of 8.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 8 to get 8.
Append the next digit (6) from the dividend to 8 and continue with: 86 / 509

Advancing to step 2:
86 divided by 509 is 0 with a remainder of 86.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 86 to get 86.
Append the next digit (0) from the dividend to 86 and continue with: 860 / 509

Going ahead to step 3:
860 divided by 509 is 1 with a remainder of 351.
Put 1 as the next digit of the answer. 
Result so far: 1.0
Subtract 509 from 860 to get 351.
Grab the next digit (2) from the dividend, add it to 351, then carry on: 3512 / 509

Going ahead to step 4:
When dividing 3512 by 509, we get 6 with a remainder of 458.
The number 6 becomes the next digit in our result. 
Result so far: 16.0
Subtracting 3054 from 3512 leaves us with 458.
Grab the next digit (5) from the dividend, add it to 458, then carry on: 4585 / 509

Step 5:
The number 509 fits into 4585 9 times, leaving a remainder of 4.
Write down 9 as next digit of the result. 
Result so far: 169.0
Subtract 4581 from 4585 to get 4.
Grab the next digit (7) from the dividend, add it to 4, then carry on: 47 / 509

Going ahead to step 6:
The number 509 fits into 47 0 times, leaving a remainder of 47.
Put 0 as the next digit of the answer. 
Result so far: 1690.0
If we take 0 away from 47, we end up with 47.
Append the next digit (0) from the dividend to 47 and continue with: 470 / 509

Going ahead to step 7:
470 divided by 509 is 0 with a remainder of 470.
Use 0 as the next digit of our solution. 
Result so far: 16900.0
Subtract 0 from 470 to get 470.
Append the next digit (2) from the dividend to 470 and continue with: 4702 / 509

On to step 8:
The number 509 fits into 4702 9 times, leaving a remainder of 121.
Write down 9 as next digit of the result. 
Result so far: 169009.0
Subtract 4581 from 4702 to get 121.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1210, and continue the process.

Let's proceed to step 9:
509 goes into 1210 2 times with a remainder of 192.
The next digit of our result is 2. 
Result so far: 169009.2
Subtract 1018 from 1210 to get 192.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1920, and continue the process.

Moving on to step 10:
509 can be fit into 1920 3 times, resulting in a remainder of 393.
Record the quotient 3 as the next digit in the result. 
Result so far: 169009.23
Deduct 1527 from 1920 and we're left with 393.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3930, and continue the process.

Going ahead to step 11:
The number 509 fits into 3930 7 times, leaving a remainder of 367.
Write down 7 as next digit of the result. 
Result so far: 169009.237
If we subtract 3563 from 3930, we get 367.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3670, and continue the process.

Step 12:
509 goes into 3670 7 times with a remainder of 107.
Put 7 as the next digit of the answer. 
Result so far: 169009.2377
Subtract 3563 from 3670 to get 107.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1070, and continue the process.

The final result is 169009.2377 with a remainder of 0.00107.