Please help me to get the following to work properly:
=SUMIF('QA Input'!E9:IV11,AND('QA Input'!E9:IV9=$C$1,'QA
Input'!E11:IV11=$M$1),'QA Input'!E12:IV12)

Basically, I'm trying to add up r12 if r9= a certain integer and r11= a
certain letter.