Answer:
Here's one way you could write the program in Python: x = int(input("Enter x: "))
y = int(input("Enter y: "))
a = int(input("Enter a: "))
b = int(input("Enter b: "))
sum = 0
for i in range(a, b+1):
if i % x == 0 and i % y == 0:
sum += i
print("The sum of all numbers divisible by", x, "and", y, "between", a, "and", b, "is", sum)
This program takes input for x, y, a, and b, then uses a for loop to iterate through the range of numbers from a to b, inclusive. For each number in the range, it checks if it is divisible by both x and y using the modulus operator (%). If a number is divisible by both x and y, it is added to the sum. Finally, the program prints the final sum.