We're dividing 86646742 by 53 
Let's see how many times 53 fits into 86646742.

On to step 1:
53 goes into 8 0 times with a remainder of 8.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 8 leaves us with 8.
Take the next digit (6) from the dividend and append it to 8, then repeat: 86 / 53

On to step 2:
86 divided by 53 is 1 with a remainder of 33.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
Deduct 53 from 86 and we're left with 33.
Bring next digit (6) of the dividend behind the 33 and repeat the process: 336 / 53

Let's proceed to step 3:
The number 53 fits into 336 6 times, leaving a remainder of 18.
Use 6 as the next digit of our solution. 
Result so far: 16.0
Subtracting 318 from 336 leaves us with 18.
Include the next digit (4) from the dividend after 18, then repeat: 184 / 53

Going ahead to step 4:
184 divided by 53 is 3 with a remainder of 25.
Write down 3 as next digit of the result. 
Result so far: 163.0
Subtract 159 from 184 to get 25.
Grab the next digit (6) from the dividend, add it to 25, then carry on: 256 / 53

Step 5:
If we divide 256 by 53, we get 4 and a remainder of 44.
Record the quotient 4 as the next digit in the result. 
Result so far: 1634.0
The remainder is 44 after subtracting 212 from 256.
Include the next digit (7) from the dividend after 44, then repeat: 447 / 53

On to step 6:
The number 53 fits into 447 8 times, leaving a remainder of 23.
Use 8 as the next digit of our solution. 
Result so far: 16348.0
If we take 424 away from 447, we end up with 23.
Bring next digit (4) of the dividend behind the 23 and repeat the process: 234 / 53

Advancing to step 7:
When dividing 234 by 53, we get 4 with a remainder of 22.
Put 4 as the next digit of the answer. 
Result so far: 163484.0
If we take 212 away from 234, we end up with 22.
Fetch the next digit (2) from the dividend, attach it to 22 and continue: 222 / 53

Going ahead to step 8:
53 can be fit into 222 4 times, resulting in a remainder of 10.
Put 4 as the next digit of the answer. 
Result so far: 1634844.0
Subtracting 212 from 222 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:
When dividing 100 by 53, we get 1 with a remainder of 47.
Use 1 as the next digit of our solution. 
Result so far: 1634844.1
If we take 53 away from 100, we end up with 47.
Since there are no more digits in the dividend, we add a zero to the remainder making it 470, and continue the process.

Step 10:
470 divided by 53 is 8 with a remainder of 46.
The next digit of our result is 8. 
Result so far: 1634844.18
If we subtract 424 from 470, we get 46.
Since there are no more digits in the dividend, we add a zero to the remainder making it 460, and continue the process.

Let's proceed to step 11:
When dividing 460 by 53, we get 8 with a remainder of 36.
Record the quotient 8 as the next digit in the result. 
Result so far: 1634844.188
Subtract 424 from 460 to get 36.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

The final outcome is 1634844.188, with a leftover of 0.0036.