diff --git a/inverseofanum.py b/inverseofanum.py
new file mode 100644
index 0000000..002c58a
--- /dev/null
+++ b/inverseofanum.py
@@ -0,0 +1,9 @@
+a=int(input())
+i=0
+j=1
+while(a>0):
+     d=int(a%10)
+     a=int(a/10)
+     i+=j*(10**d-1)
+     j+=1
+print(i)
\ No newline at end of file