We look at the division of 390166 by 43 
We're looking to find how many times 43 goes into 390166.

Let's proceed to step 1:
43 goes into 3 0 times with a remainder of 3.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 3, we end up with 3.
Take the next digit (9) from the dividend and append it to 3, then repeat: 39 / 43

Going ahead to step 2:
If we divide 39 by 43, we get 0 and a remainder of 39.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 39 after subtracting 0 from 39.
Append the next digit (0) from the dividend to 39 and continue with: 390 / 43

Moving on to step 3:
The number 43 fits into 390 9 times, leaving a remainder of 3.
Write down 9 as next digit of the result. 
Result so far: 9.0
If we subtract 387 from 390, we get 3.
Fetch the next digit (1) from the dividend, attach it to 3 and continue: 31 / 43

Let's proceed to step 4:
When dividing 31 by 43, we get 0 with a remainder of 31.
Record the quotient 0 as the next digit in the result. 
Result so far: 90.0
If we take 0 away from 31, we end up with 31.
Take the next digit (6) from the dividend and append it to 31, then repeat: 316 / 43

Step 5:
If we divide 316 by 43, we get 7 and a remainder of 15.
Use 7 as the next digit of our solution. 
Result so far: 907.0
If we subtract 301 from 316, we get 15.
Take the next digit (6) from the dividend and append it to 15, then repeat: 156 / 43

Going ahead to step 6:
If we divide 156 by 43, we get 3 and a remainder of 27.
Use 3 as the next digit of our solution. 
Result so far: 9073.0
If we subtract 129 from 156, we get 27.
Since there are no more digits in the dividend, we add a zero to the remainder making it 270, and continue the process.

Going ahead to step 7:
43 can be fit into 270 6 times, resulting in a remainder of 12.
The next digit of our result is 6. 
Result so far: 9073.6
The remainder is 12 after subtracting 258 from 270.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Moving on to step 8:
43 goes into 120 2 times with a remainder of 34.
Write down 2 as next digit of the result. 
Result so far: 9073.62
Subtract 86 from 120 to get 34.
Since there are no more digits in the dividend, we add a zero to the remainder making it 340, and continue the process.

Going ahead to step 9:
43 can be fit into 340 7 times, resulting in a remainder of 39.
Record the quotient 7 as the next digit in the result. 
Result so far: 9073.627
If we subtract 301 from 340, we get 39.
Since there are no more digits in the dividend, we add a zero to the remainder making it 390, and continue the process.

Moving on to step 10:
43 goes into 390 9 times with a remainder of 3.
Record the quotient 9 as the next digit in the result. 
Result so far: 9073.6279
If we subtract 387 from 390, we get 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Step 11:
The number 43 fits into 30 0 times, leaving a remainder of 30.
The number 0 becomes the next digit in our result. 
Result so far: 9073.6279
Subtract 0 from 30 to get 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Moving on to step 12:
43 can be fit into 300 6 times, resulting in a remainder of 42.
Use 6 as the next digit of our solution. 
Result so far: 9073.627906
If we subtract 258 from 300, we get 42.
Since there are no more digits in the dividend, we add a zero to the remainder making it 420, and continue the process.

Going ahead to step 13:
43 can be fit into 420 9 times, resulting in a remainder of 33.
Use 9 as the next digit of our solution. 
Result so far: 9073.6279069
If we subtract 387 from 420, we get 33.
Since there are no more digits in the dividend, we add a zero to the remainder making it 330, and continue the process.

Let's proceed to step 14:
330 divided by 43 is 7 with a remainder of 29.
Use 7 as the next digit of our solution. 
Result so far: 9073.62790697
If we take 301 away from 330, we end up with 29.
Since there are no more digits in the dividend, we add a zero to the remainder making it 290, and continue the process.

The final outcome is 9073.62790697, with a leftover of 2.9e-08.