Something

main block: [0,0] -> [160x120], pixel sum is 352458split into:0: [0,0] -> [80x60], pixel sum is 983911: [80,0] -> [80x60], pixel sum is 760702: [0,60] -> [80x60], pixel sum is 1007153: [80,60] -> [80x60], pixel sum is 77282