5*6+8/2
## [1] 34
415+48+5-54/455*24
## [1] 465.1516
481/59*64*5+58-54
## [1] 2612.814
448*89/951+5*98-65
## [1] 466.9264
548-51+57*89/5-964
## [1] 547.6
79-54/85*65478*46/65+58-888888
## [1] -918189.4
785*45+547
## [1] 35872