You have to solve
Remember that following the order of operations, you have to solve the divisions/multiplications first and then addition/subtractions as the last operation.
To make the order easier I'm going to separate the operations using parentheses.
First comes the division 77÷4, then you have to multiply the result by 43 and to finish you have to add the result to 66
1) Solve the division
2) Solve the multiplication
3) Add the remaining values