For the below RISC-V instruction, provide the machine code in its hexadecimal format (0xhhhhhhhh)

- sra x7, x22, x8

- lwu x19, -37(x9)

- lui x17, 0x8473b

- jalr x4, -216(x20)

For the RISC-V processor, what is the assembly code for the following RISC-V machine code? Please use exactly 1 space after the instruction and each comma.

- 0x0280f623

- 0x10c00def

- 0xf99fc613

- 0xc05801e3