We're dividing 143505 by 43 
We want to figure out the number of times 143505 can be divided by 43.

Let's proceed to step 1:
When dividing 1 by 43, we get 0 with a remainder of 1.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 1 to get 1.
Grab the next digit (4) from the dividend, add it to 1, then carry on: 14 / 43

Moving on to step 2:
If we divide 14 by 43, we get 0 and a remainder of 14.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 14, we get 14.
Bring next digit (3) of the dividend behind the 14 and repeat the process: 143 / 43

On to step 3:
143 divided by 43 is 3 with a remainder of 14.
Put 3 as the next digit of the answer. 
Result so far: 3.0
If we take 129 away from 143, we end up with 14.
Fetch the next digit (5) from the dividend, attach it to 14 and continue: 145 / 43

On to step 4:
If we divide 145 by 43, we get 3 and a remainder of 16.
Write down 3 as next digit of the result. 
Result so far: 33.0
The remainder is 16 after subtracting 129 from 145.
Fetch the next digit (0) from the dividend, attach it to 16 and continue: 160 / 43

Moving on to step 5:
When dividing 160 by 43, we get 3 with a remainder of 31.
Write down 3 as next digit of the result. 
Result so far: 333.0
Subtract 129 from 160 to get 31.
Fetch the next digit (5) from the dividend, attach it to 31 and continue: 315 / 43

Moving on to step 6:
43 can be fit into 315 7 times, resulting in a remainder of 14.
Record the quotient 7 as the next digit in the result. 
Result so far: 3337.0
Subtract 301 from 315 to get 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

Going ahead to step 7:
When dividing 140 by 43, we get 3 with a remainder of 11.
Write down 3 as next digit of the result. 
Result so far: 3337.3
The remainder is 11 after subtracting 129 from 140.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

Let's proceed to step 8:
When dividing 110 by 43, we get 2 with a remainder of 24.
Use 2 as the next digit of our solution. 
Result so far: 3337.32
If we take 86 away from 110, we end up with 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Moving on to step 9:
43 can be fit into 240 5 times, resulting in a remainder of 25.
Write down 5 as next digit of the result. 
Result so far: 3337.325
Subtract 215 from 240 to get 25.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

Advancing to step 10:
The number 43 fits into 250 5 times, leaving a remainder of 35.
The next digit of our result is 5. 
Result so far: 3337.3255
Subtract 215 from 250 to get 35.
Since there are no more digits in the dividend, we add a zero to the remainder making it 350, and continue the process.

The final result is 3337.3255 with a remainder of 0.00035.