3) Write a program that calculates sum of two 16-bit numbers. Assume that the first number is in addresses Ox10 (low byte) and 0x11 (high byte). The second number is in addresses 0x20 (low byte) and 0x21 (high byte). The result should be written into addresses 0x30 (low byte) and 0x31 (high byte) (6 points)