To find the remainder, you would need to find the quotient of the equation. So to do so, you will need to divide 7243 by 4. After doing so, you will get an answer of 1810. This is without the remainder. The remainder is the number left over after everything has been solve in a division problem. After you have solved the problem, you will get an answer of 1810 and a remainder of 75, so your full answer is 1810.75!
I hope this helps!