Use mathematical expression and operator priority correctly

Assignment: The total weight of a cargo shipment needs to be calculated before being loaded to ensure it does not exceed safety regulations. The shipment contains two types of products: A and B$.$

Their weight per unit is stored in weightA and weightB, respectively, while the number of units is stored in numberOfA and numberOfB.

Please calculate the total weight of the shipment and store the result in a variable called totalWeight, which has already been declared but not assigned.