zygo> { a = 10 }
10
zygo> { b = 12 }
12
zygo> { a + b * 2 }
34
zygo> { a + b * 2 / .5}
58
zygo> (defn cube [x] (* x x x)) // or (defn cube [x] {x*x*x})
zygo> a
10
zygo> b
12
zygo> cube
(defn cube [x] (* x x x))
zygo> (cube b)
1728
zygo> { a + (cube b) ** 2}  // L ** R means raise L to the power R.
2985994
zygo>