WHAT IS WRONG WITH MY FORMULA? I KEEP GETTING AN ERROR MESSAGE =IF(O3>0.0001,(IF(G3>65,IF(H3="M",(PRODUCT(SUM(140,-G3),K3))/(PRODUCT(72,IF(O3>1,O3,1))),((PRODUCT(SUM(140,-G3),K3))/(PRODUCT(72,IF(O3,1)))*0.85)),IF(H3="M",(PRODUCT(SUM(140,-G3),K3))/(PRODUCT(72,O3)),((PRODUCT(SUM(140,-G3),K3))/(PRODUCT(SUM(140,-G3),K3))/PRODUCT(72,O3))*0.85)))),"")
Solved by G. J. in 14 mins