678 + 303 = 981
all u have to do is put it in your head, all u have to do is add 8 + 3, then u get 11, then u put the 1 on top of 7, add 7 + 1 + 0 and u get 8,and lastly add 6 + 3 and u get 9, in total its 981, hope this helps and don't 4get to select this as brainliest answer
