Your numbers are screwy and the metric you're calculating is the wrong one. Installed solar grew by around 130GW in 2020 according to this https://www.iea.org/

Your numbers are screwy and the metric you're calculating is the wrong one. Installed solar grew by around 130GW in 2020 according to this https://www.iea.org/reports/solar-pv https://www.iea.org/reports/solar-pv which implies somewhere on the order of a billion square meters so you're out by a factor of at least 1000 and there about 20TW of electricity production to replace. So we need 120x 2020's output to replace electricity. Other uses of fuels are about an order of magnitude more So the delta is about 100-1000 given a decade of production. Less if we start to reign in the gratuitous waste of the west. The output of your calculation is a testament to how grossly inefficient corn ethanol is. Not an endorsement of it.