diff --git a/README.md b/README.md
index a831ddd..31646b8 100644
--- a/README.md
+++ b/README.md
@@ -1,3 +1,20 @@
+# A minimalist calculator for fermi estimation
+
+This project contains a minimalist calculator for Fermi estimation. Right now, it just multiplies lognormals.
+
+## Motivation
+
+Sometimes, [Squiggle](https://github.com/quantified-uncertainty/squiggle), [simple squiggle](https://git.nunosempere.com/quantified.uncertainty/simple-squiggle) or [squiggle.c](https://git.nunosempere.com/personal/squiggle.c) are still too complicated and un-unix-like.
+
+## An example
+
+
+
+Perhaps this example might be clearer with comment
+
+
+## 
+
 To do:
 
 - [ ] Write README
@@ -8,6 +25,7 @@ To do:
 - [ ] Program into a small device, like a calculator?
 - [ ] Allow comments?
   - Use a sed filter? 
+- [ ] Think of some way of calling bc
 
 
 go run main.go < model.f
diff --git a/makefile b/makefile
new file mode 100644
index 0000000..211d012
--- /dev/null
+++ b/makefile
@@ -0,0 +1,8 @@
+run:
+	go run f.go
+
+build:
+	go build f.go
+
+install: f
+	sudo mv f /usr/bin/f
diff --git a/pianotuners.f b/pianotuners.f
new file mode 100644
index 0000000..5bddb95
--- /dev/null
+++ b/pianotuners.f
@@ -0,0 +1,9 @@
+Please enter exactly two floats.
+4000000 12000000
+=> 4000000.0 12000000.0
+0.005 0.01
+=> 25587.7 93795.1
+1/365 1/365
+Invalid input. Please ensure you enter two floats.
+1 1
+=> 25587.7 93795.1