Basically just indexing, god python is easy

40/main.py

@@ -0,0 +1,29 @@
+'''An irrational decimal fraction is created by concatenating the positive integers:
+
+0.123456789101112131415161718192021...
+
+It can be seen that the 12th digit of the fractional part is 1.
+
+If dn represents the nth digit of the fractional part, find the value of the following expression.
+
+d1 × d10 × d100 × d1000 × d10000 × d100000 × d1000000
+'''
+
+def main():
+    print("Hello this is Patrick")
+
+    s = ""
+    n = 1
+
+    while len(s) < 1000000:
+        s += str(n)
+        n += 1
+
+    d = 1
+    for i in range(1, 7):
+        d *= int(s[10**i - 1])
+    
+    print(d)
+
+if __name__ == "__main__":
+    main()