149
50 + 49 = 99
1.35+5.23+9.49+99+18+50 =183.07 The total cost is $183.07. All the addition can happen in the same step.
12.99 + 99 + 99 + 99 = 309.99
213
199 + 199 + 199 + 199 + 99 + 99 + 99 = 1192
307
297
99 + 99 + 88 + 88 + 72 + 72 = 518
3/11+(-7/9) = -50/99
99 + 99 = 198
99/50 = 1.98 = 198%
330 plus 99 plus 7 is equal to 436.