diff --git a/internal/sessionprobe/probe.go b/internal/sessionprobe/probe.go
new file mode 100644
index 0000000..fd2c968
--- /dev/null
+++ b/internal/sessionprobe/probe.go
@@ -0,0 +1,6 @@
+package sessionprobe
+
+// Average returns the integer average of total across count items.
+func Average(total, count int) int {
+	return total / count
+}