We look at the division of 386402 by 1 
We're looking to find how many times 1 goes into 386402.

Advancing to step 1:
If we divide 3 by 1, we get 3 and a remainder of 0.
The number 3 becomes the next digit in our result. 
Result so far: 3.0
The remainder is 0 after subtracting 3 from 3.
Grab the next digit (8) from the dividend, add it to 0, then carry on: 8 / 1

Moving on to step 2:
1 goes into 8 8 times with a remainder of 0.
The number 8 becomes the next digit in our result. 
Result so far: 38.0
If we take 8 away from 8, we end up with 0.
Append the next digit (6) from the dividend to 0 and continue with: 6 / 1

Advancing to step 3:
If we divide 6 by 1, we get 6 and a remainder of 0.
Use 6 as the next digit of our solution. 
Result so far: 386.0
If we take 6 away from 6, we end up with 0.
Include the next digit (4) from the dividend after 0, then repeat: 4 / 1

Moving on to step 4:
1 can be fit into 4 4 times, resulting in a remainder of 0.
The number 4 becomes the next digit in our result. 
Result so far: 3864.0
Subtracting 4 from 4 leaves us with 0.
Grab the next digit (0) from the dividend, add it to 0, then carry on: 0 / 1

On to step 5:
0 divided by 1 is 0 with a remainder of 0.
The next digit of our result is 0. 
Result so far: 38640.0
Deduct 0 from 0 and we're left with 0.
Fetch the next digit (2) from the dividend, attach it to 0 and continue: 2 / 1

Going ahead to step 6:
2 divided by 1 is 2 with a remainder of 0.
The next digit of our result is 2. 
Result so far: 386402.0
Subtract 2 from 2 to get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Advancing to step 7:
1 can be fit into 0 0 times, resulting in a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 386402.0
If we subtract 0 from 0, we get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Advancing to step 8:
1 can be fit into 0 0 times, resulting in a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 386402.0
Deduct 0 from 0 and we're left 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.

After the division, we end up with 386402.0 and a remainder of 0.0.