We're dividing 15431 by 43 
Our goal is to divide 15431 by 43.

Moving on to step 1:
43 can be fit into 1 0 times, resulting in a remainder of 1.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 1 after subtracting 0 from 1.
Append the next digit (5) from the dividend to 1 and continue with: 15 / 43

Moving on to step 2:
43 can be fit into 15 0 times, resulting in a remainder of 15.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 15 leaves us with 15.
Take the next digit (4) from the dividend and append it to 15, then repeat: 154 / 43

Step 3:
43 can be fit into 154 3 times, resulting in a remainder of 25.
Record the quotient 3 as the next digit in the result. 
Result so far: 3.0
Subtract 129 from 154 to get 25.
Bring next digit (3) of the dividend behind the 25 and repeat the process: 253 / 43

Moving on to step 4:
When dividing 253 by 43, we get 5 with a remainder of 38.
Write down 5 as next digit of the result. 
Result so far: 35.0
If we take 215 away from 253, we end up with 38.
Bring next digit (1) of the dividend behind the 38 and repeat the process: 381 / 43

Let's proceed to step 5:
The number 43 fits into 381 8 times, leaving a remainder of 37.
The next digit of our result is 8. 
Result so far: 358.0
If we take 344 away from 381, we end up with 37.
Since there are no more digits in the dividend, we add a zero to the remainder making it 370, and continue the process.

Let's proceed to step 6:
The number 43 fits into 370 8 times, leaving a remainder of 26.
Write down 8 as next digit of the result. 
Result so far: 358.8
Subtract 344 from 370 to get 26.
Since there are no more digits in the dividend, we add a zero to the remainder making it 260, and continue the process.

Advancing to step 7:
The number 43 fits into 260 6 times, leaving a remainder of 2.
The next digit of our result is 6. 
Result so far: 358.86
If we subtract 258 from 260, we get 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Moving on to step 8:
43 can be fit into 20 0 times, resulting in a remainder of 20.
Put 0 as the next digit of the answer. 
Result so far: 358.86
Subtracting 0 from 20 leaves us with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Advancing to step 9:
If we divide 200 by 43, we get 4 and a remainder of 28.
Use 4 as the next digit of our solution. 
Result so far: 358.8604
If we take 172 away from 200, we end up with 28.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

Advancing to step 10:
If we divide 280 by 43, we get 6 and a remainder of 22.
Record the quotient 6 as the next digit in the result. 
Result so far: 358.86046
If we take 258 away from 280, we end up with 22.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

Step 11:
When dividing 220 by 43, we get 5 with a remainder of 5.
The number 5 becomes the next digit in our result. 
Result so far: 358.860465
Subtract 215 from 220 to get 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Moving on to step 12:
If we divide 50 by 43, we get 1 and a remainder of 7.
The next digit of our result is 1. 
Result so far: 358.8604651
The remainder is 7 after subtracting 43 from 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

Advancing to step 13:
70 divided by 43 is 1 with a remainder of 27.
Put 1 as the next digit of the answer. 
Result so far: 358.86046511
If we take 43 away from 70, we end up with 27.
Since there are no more digits in the dividend, we add a zero to the remainder making it 270, and continue the process.

The final outcome is 358.86046511, with a leftover of 2.7e-08.