Hi. To make this easier, try turning both of the numbers into whole numbers. To do this, you'll need to move the decimal points two place to the right.
.43 becomes 43, and 2.54 becomes 254.
Always move the decimal point the same number of places for both numbers.
Now you've got 254 ÷ 43. To figure out where to start, think about how many times 50 would go into 250. We know it would go 5 times, so our answer has to be at least 5.
254 ÷ 43 ≈ 5.9069767
(Find out if your teacher wants the number rounded to the nearest tenth, the nearest hundredth or the nearest thousandth.)