We're dividing 86939442 by 509 
We want to figure out the number of times 86939442 can be divided by 509.

Let's proceed to step 1:
8 divided by 509 is 0 with a remainder of 8.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 8 after subtracting 0 from 8.
Fetch the next digit (6) from the dividend, attach it to 8 and continue: 86 / 509

Advancing to step 2:
86 divided by 509 is 0 with a remainder of 86.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 86, we end up with 86.
Fetch the next digit (9) from the dividend, attach it to 86 and continue: 869 / 509

Let's proceed to step 3:
If we divide 869 by 509, we get 1 and a remainder of 360.
Put 1 as the next digit of the answer. 
Result so far: 1.0
The remainder is 360 after subtracting 509 from 869.
Fetch the next digit (3) from the dividend, attach it to 360 and continue: 3603 / 509

Moving on to step 4:
509 goes into 3603 7 times with a remainder of 40.
The next digit of our result is 7. 
Result so far: 17.0
If we subtract 3563 from 3603, we get 40.
Bring next digit (9) of the dividend behind the 40 and repeat the process: 409 / 509

Going ahead to step 5:
409 divided by 509 is 0 with a remainder of 409.
The number 0 becomes the next digit in our result. 
Result so far: 170.0
If we take 0 away from 409, we end up with 409.
Append the next digit (4) from the dividend to 409 and continue with: 4094 / 509

On to step 6:
4094 divided by 509 is 8 with a remainder of 22.
Record the quotient 8 as the next digit in the result. 
Result so far: 1708.0
The remainder is 22 after subtracting 4072 from 4094.
Append the next digit (4) from the dividend to 22 and continue with: 224 / 509

On to step 7:
509 can be fit into 224 0 times, resulting in a remainder of 224.
Record the quotient 0 as the next digit in the result. 
Result so far: 17080.0
If we subtract 0 from 224, we get 224.
Fetch the next digit (2) from the dividend, attach it to 224 and continue: 2242 / 509

Moving on to step 8:
If we divide 2242 by 509, we get 4 and a remainder of 206.
Write down 4 as next digit of the result. 
Result so far: 170804.0
Deduct 2036 from 2242 and we're left with 206.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2060, and continue the process.

Let's proceed to step 9:
509 can be fit into 2060 4 times, resulting in a remainder of 24.
Write down 4 as next digit of the result. 
Result so far: 170804.4
The remainder is 24 after subtracting 2036 from 2060.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Going ahead to step 10:
When dividing 240 by 509, we get 0 with a remainder of 240.
The number 0 becomes the next digit in our result. 
Result so far: 170804.4
The remainder is 240 after subtracting 0 from 240.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2400, and continue the process.

Step 11:
509 can be fit into 2400 4 times, resulting in a remainder of 364.
Use 4 as the next digit of our solution. 
Result so far: 170804.404
The remainder is 364 after subtracting 2036 from 2400.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3640, and continue the process.

Going ahead to step 12:
3640 divided by 509 is 7 with a remainder of 77.
The next digit of our result is 7. 
Result so far: 170804.4047
If we take 3563 away from 3640, we end up with 77.
Since there are no more digits in the dividend, we add a zero to the remainder making it 770, and continue the process.

Advancing to step 13:
If we divide 770 by 509, we get 1 and a remainder of 261.
Put 1 as the next digit of the answer. 
Result so far: 170804.40471
If we take 509 away from 770, we end up with 261.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2610, and continue the process.

Step 14:
509 can be fit into 2610 5 times, resulting in a remainder of 65.
Use 5 as the next digit of our solution. 
Result so far: 170804.404715
Subtract 2545 from 2610 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.

Step 15:
650 divided by 509 is 1 with a remainder of 141.
Use 1 as the next digit of our solution. 
Result so far: 170804.4047151
If we take 509 away from 650, we end up with 141.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1410, and continue the process.

Moving on to step 16:
If we divide 1410 by 509, we get 2 and a remainder of 392.
Write down 2 as next digit of the result. 
Result so far: 170804.40471512
Subtracting 1018 from 1410 leaves us with 392.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3920, and continue the process.

The final result is 170804.40471512 with a remainder of 3.92e-07.