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     1 import CW9a._  | 
     1 import CW8a._  | 
     2   | 
     2   | 
     3 assert(compute(syard(split("3 + 4 * ( 2 - 1 )"))) == 7) | 
     3 assert(compute(syard(split("3 + 4 * ( 2 - 1 )"))) == 7) | 
     4 assert(compute(syard(split("10 + 12 * 33"))) == 406) | 
     4 assert(compute(syard(split("10 + 12 * 33"))) == 406) | 
     5 assert(compute(syard(split("( 5 + 7 ) * 2"))) == 24) | 
     5 assert(compute(syard(split("( 5 + 7 ) * 2"))) == 24) | 
     6 assert(compute(syard(split("5 + 7 / 2"))) == 8) | 
     6 assert(compute(syard(split("5 + 7 / 2"))) == 8) |