diff -r e9d14d58be3c -r daf561a83ba6 core_marking3/postfix_test2.scala
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/core_marking3/postfix_test2.scala	Mon Apr 11 23:55:27 2022 +0100
@@ -0,0 +1,8 @@
+import C3a._
+
+assert(compute(syard(split("3 + 4 * ( 2 - 1 )"))) == 7)
+assert(compute(syard(split("10 + 12 * 33"))) == 406)
+assert(compute(syard(split("( 5 + 7 ) * 2"))) == 24)
+assert(compute(syard(split("5 + 7 / 2"))) == 8)
+assert(compute(syard(split("5 * 7 / 2"))) == 17)
+assert(compute(syard(split("9 + 24 / ( 7 - 3 )"))) == 15)