diff --git a/15.20.py b/15.20.py
new file mode 100644
index 0000000..a878247
--- /dev/null
+++ b/15.20.py
@@ -0,0 +1,17 @@
+def check(string):
+    s = 0
+    for el in string:
+        try:
+            s += int(el)
+        except ValueError:
+            pass
+
+    return s
+
+string = '8teh5487iu1jkb4823o7g2ov8fui3og87g73o821oyito5g4b8oop787i9uyhj'
+print(check(string))
+    
+
+
+
+