155391 divided by 43 
We want to divide 155391 by 43.

Advancing to step 1:
1 divided by 43 is 0 with a remainder of 1.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 1, we get 1.
Include the next digit (5) from the dividend after 1, then repeat: 15 / 43

Moving on to step 2:
The number 43 fits into 15 0 times, leaving a remainder of 15.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 15 and we're left with 15.
Include the next digit (5) from the dividend after 15, then repeat: 155 / 43

Let's proceed to step 3:
If we divide 155 by 43, we get 3 and a remainder of 26.
Record the quotient 3 as the next digit in the result. 
Result so far: 3.0
Subtract 129 from 155 to get 26.
Take the next digit (3) from the dividend and append it to 26, then repeat: 263 / 43

Moving on to step 4:
263 divided by 43 is 6 with a remainder of 5.
Write down 6 as next digit of the result. 
Result so far: 36.0
Subtracting 258 from 263 leaves us with 5.
Bring next digit (9) of the dividend behind the 5 and repeat the process: 59 / 43

On to step 5:
59 divided by 43 is 1 with a remainder of 16.
The next digit of our result is 1. 
Result so far: 361.0
If we take 43 away from 59, we end up with 16.
Bring next digit (1) of the dividend behind the 16 and repeat the process: 161 / 43

Advancing to step 6:
43 goes into 161 3 times with a remainder of 32.
Record the quotient 3 as the next digit in the result. 
Result so far: 3613.0
The remainder is 32 after subtracting 129 from 161.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

Going ahead to step 7:
When dividing 320 by 43, we get 7 with a remainder of 19.
Record the quotient 7 as the next digit in the result. 
Result so far: 3613.7
If we take 301 away from 320, we end up with 19.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

Advancing to step 8:
43 goes into 190 4 times with a remainder of 18.
The number 4 becomes the next digit in our result. 
Result so far: 3613.74
Subtract 172 from 190 to get 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

On to step 9:
43 goes into 180 4 times with a remainder of 8.
The number 4 becomes the next digit in our result. 
Result so far: 3613.744
Subtract 172 from 180 to get 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

After the division, we end up with 3613.744 and a remainder of 0.0008.