45143 ÷ 310 
We want to divide 45143 by 310.

Let's proceed to step 1:
310 goes into 4 0 times with a remainder of 4.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 4, we get 4.
Bring next digit (5) of the dividend behind the 4 and repeat the process: 45 / 310

Step 2:
45 divided by 310 is 0 with a remainder of 45.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 45, we get 45.
Grab the next digit (1) from the dividend, add it to 45, then carry on: 451 / 310

Moving on to step 3:
451 divided by 310 is 1 with a remainder of 141.
The next digit of our result is 1. 
Result so far: 1.0
Subtracting 310 from 451 leaves us with 141.
Include the next digit (4) from the dividend after 141, then repeat: 1414 / 310

Step 4:
If we divide 1414 by 310, we get 4 and a remainder of 174.
Put 4 as the next digit of the answer. 
Result so far: 14.0
The remainder is 174 after subtracting 1240 from 1414.
Append the next digit (3) from the dividend to 174 and continue with: 1743 / 310

Going ahead to step 5:
When dividing 1743 by 310, we get 5 with a remainder of 193.
Use 5 as the next digit of our solution. 
Result so far: 145.0
If we take 1550 away from 1743, we end up with 193.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1930, and continue the process.

Moving on to step 6:
310 can be fit into 1930 6 times, resulting in a remainder of 70.
Put 6 as the next digit of the answer. 
Result so far: 145.6
The remainder is 70 after subtracting 1860 from 1930.
Since there are no more digits in the dividend, we add a zero to the remainder making it 700, and continue the process.

Going ahead to step 7:
When dividing 700 by 310, we get 2 with a remainder of 80.
Put 2 as the next digit of the answer. 
Result so far: 145.62
The remainder is 80 after subtracting 620 from 700.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

Let's proceed to step 8:
If we divide 800 by 310, we get 2 and a remainder of 180.
Use 2 as the next digit of our solution. 
Result so far: 145.622
Subtract 620 from 800 to get 180.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1800, and continue the process.

Our division results in 145.622 with a remaining 0.018.