3. Calculator. Write a program Calculator.java that reads an integer N from standard input and then asks the user to enter N expressions according to the following format: x plus y where x and y are integers, x times y, and x div y. For each expression, your program must produce the corresponding output (see example below) > java Calculator Enter the number of expressions: 4 Enter expression 1: 3 plus 4 3 plus 4 is equal to 7 Enter expression 2: 7 times 3 7 times 3 is equal to 21 Enter expression 3: 10 dive 10 div 0 is not possible! Enter expression 3: 10 div 2 10 div 2 is 5