Update app.py

app.py

@@ -1,7 +1,7 @@
 import gradio as gr
 
 def convert_to_french_letters(number):
-    # Define lists of French words for numbers
+    # Define lists of French words for numbers 
     units = ['', 'un', 'deux', 'trois', 'quatre', 'cinq', 'six', 'sept', 'huit', 'neuf']
     tens = ['', 'dix', 'vingt', 'trente', 'quarante', 'cinquante', 'soixante', 'soixante-dix', 'quatre-vingt', 'quatre-vingt-dix']
     # Define special cases for 70, 80, and 90
@@ -48,7 +48,7 @@ def convert_to_french_letters(number):
             words.append('dix-' + units[tens_and_units-10])
         else:
             tens_digit = tens[int(tens_and_units / 10)]
-            units_digit = units[tens_and_units % 10]
+            units_digit = units[int(tens_and_units % 10)]
             if tens_digit == 'vingt' and units_digit == 'un':
                 tens_digit = 'vingt-et-un'
                 units_digit = ''