Convert "fmod" to typst

src/Warm-Ups/fmod/main.typ

@@ -0,0 +1,10 @@
+#import "@local/handout:0.1.0": *
+
+#show: handout.with(
+  title: [Warm-Up: `fmod`],
+  by: "Mark",
+)
+
+#problem()
+I'm sure you're all familiar with how `mod(a, b)` and `remainder(a, b)` \ work when `a` and `b` are integers.
+Devise an equivalent for floats (i.e, real numbers).