Abit is planning a birthday party for his granddad. He bought a cake for $18\$18$18dollar sign, 18. He also wants to buy some balloons, which are $4\$4$4dollar sign, 4 each. Abit has $35\$35$35dollar sign, 35 to spend all together. How much money will Abit have left after he buys the cake and as many balloons as possible?