Remove .md and image files and move python files into main chapter folders

thinkcspy/Chapter-9-Exercises/Problem5.py

@@ -0,0 +1,15 @@
+# Runestone.Academy thinkcspy course
+# Chapter 9
+# Problem 
+
+def numDigits(n):
+    # your code here
+    toText = str(n)
+    count = 0
+    
+    for i in range (len(toText)):
+        count += 1
+        
+    return count
+    
+print(numDigits(13))