>>952430top left is -16 since multiplication comes before addition, remember PEMDAS.
Bottom left is +56-186=-130 I think.
top right is 10y+12 I think.
mid right is 6x+2y maybe?
bottom right is 36/291, or 1237113402061856 probably. Anyone want to check me on this? I'm awful at math and practicing to get better again.