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I need help with this question with explanation. I am new to using assembly and calculating delay so the more explanation the more helpful you

I need help with this question with explanation. I am new to using assembly and calculating delay so the more explanation the more helpful you well be.

Calculate the exact delay/clock cycles for the below delay subroutine:

QDELAY: LDI R20, 16 D0: LDI R21, 200 D1: LDI R22, 250 D2: NOP

NOP DEC R22 BRNE D2 DEC R21 BRNE D1 DEC R20 BRNE D0 RET

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