We look at the division of 668580 by 43 
We want to divide 668580 by 43.

On to step 1:
43 goes into 6 0 times with a remainder of 6.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 6 leaves us with 6.
Grab the next digit (6) from the dividend, add it to 6, then carry on: 66 / 43

Advancing to step 2:
The number 43 fits into 66 1 times, leaving a remainder of 23.
The next digit of our result is 1. 
Result so far: 1.0
Subtracting 43 from 66 leaves us with 23.
Fetch the next digit (8) from the dividend, attach it to 23 and continue: 238 / 43

Let's proceed to step 3:
If we divide 238 by 43, we get 5 and a remainder of 23.
Write down 5 as next digit of the result. 
Result so far: 15.0
Subtracting 215 from 238 leaves us with 23.
Fetch the next digit (5) from the dividend, attach it to 23 and continue: 235 / 43

Let's proceed to step 4:
235 divided by 43 is 5 with a remainder of 20.
Use 5 as the next digit of our solution. 
Result so far: 155.0
Deduct 215 from 235 and we're left with 20.
Append the next digit (8) from the dividend to 20 and continue with: 208 / 43

Step 5:
If we divide 208 by 43, we get 4 and a remainder of 36.
Put 4 as the next digit of the answer. 
Result so far: 1554.0
If we subtract 172 from 208, we get 36.
Fetch the next digit (0) from the dividend, attach it to 36 and continue: 360 / 43

Going ahead to step 6:
The number 43 fits into 360 8 times, leaving a remainder of 16.
Write down 8 as next digit of the result. 
Result so far: 15548.0
If we take 344 away from 360, we end up with 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Step 7:
The number 43 fits into 160 3 times, leaving a remainder of 31.
Write down 3 as next digit of the result. 
Result so far: 15548.3
The remainder is 31 after subtracting 129 from 160.
Since there are no more digits in the dividend, we add a zero to the remainder making it 310, and continue the process.

On to step 8:
The number 43 fits into 310 7 times, leaving a remainder of 9.
Record the quotient 7 as the next digit in the result. 
Result so far: 15548.37
The remainder is 9 after subtracting 301 from 310.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

Step 9:
43 can be fit into 90 2 times, resulting in a remainder of 4.
Record the quotient 2 as the next digit in the result. 
Result so far: 15548.372
Deduct 86 from 90 and we're left with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

On to step 10:
43 can be fit into 40 0 times, resulting in a remainder of 40.
Use 0 as the next digit of our solution. 
Result so far: 15548.372
The remainder is 40 after subtracting 0 from 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Advancing to step 11:
When dividing 400 by 43, we get 9 with a remainder of 13.
Put 9 as the next digit of the answer. 
Result so far: 15548.37209
Subtract 387 from 400 to get 13.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

Moving on to step 12:
43 goes into 130 3 times with a remainder of 1.
The number 3 becomes the next digit in our result. 
Result so far: 15548.372093
If we take 129 away from 130, we end up with 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Going ahead to step 13:
The number 43 fits into 10 0 times, leaving a remainder of 10.
The number 0 becomes the next digit in our result. 
Result so far: 15548.372093
Subtract 0 from 10 to get 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

On to step 14:
When dividing 100 by 43, we get 2 with a remainder of 14.
Record the quotient 2 as the next digit in the result. 
Result so far: 15548.37209302
If we take 86 away from 100, we end up with 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

The final result is 15548.37209302 with a remainder of 1.4e-08.