diff --git a/content/basics/numeric-constants.go b/content/basics/numeric-constants.go
index 97d5155..59784b5 100644
--- a/content/basics/numeric-constants.go
+++ b/content/basics/numeric-constants.go
@@ -5,8 +5,11 @@
 import "fmt"
 
 const (
-	Big   = 1 << 100  // == 1267650600228229401496703205376
-	Small = Big >> 99 // == 2
+	// Create a huge number by shifting a 1 bit left 100 places.
+	// In other words, the binary number that is 1 followed by 100 zeroes.
+	Big = 1 << 100
+	// Shift it right again 99 places, so we end up with 1<<1, or 2.
+	Small = Big >> 99
 )
 
 func needInt(x int) int { return x*10 + 1 }