Recap - Simple Functions

// Complete the add function that returns the sum of two numbers
int add(int a, int b) {
  // Your code here
}

// Implement the subtract function using arrow syntax
int subtract(int a, int b) /* Your code here */

// Create a multiply function that returns the product of two numbers
// Your code here

// Implement the divide function that returns the result of a / b
double divide(int a, int b) {
  // Your code here
}

// Create a void function that prints the result in the format:
// "Result of {operation}: {result}"
void printResult(String operation, dynamic result) {
  // Your code here
}

// Complete the calculate function that performs different operations
// based on the operator provided (+, -, *, /)
dynamic calculate(int a, int b, String operator) {
  // Your code here
}

void main() {
  // Test your functions
  printResult('5 + 3', calculate(5, 3, '+'));
  printResult('10 - 4', calculate(10, 4, '-'));
  printResult('6 * 7', calculate(6, 7, '*'));
  printResult('20 / 4', calculate(20, 4, '/'));
}