get correct number format info in in_words function

frappe/utils/data.py

@@ -437,8 +437,9 @@ def money_in_words(number, main_currency = None, fraction_currency=None):
 
 	number_format = frappe.db.get_value("Currency", main_currency, "number_format", cache=True) or \
 		frappe.db.get_default("number_format") or "#,###.##"
+		
+	fraction_length = get_number_format_info(number_format)[2]
 
-	fraction_length = len(number_format.rsplit('.', 1)[-1])
 	n = "%.{0}f".format(fraction_length) % number
 	main, fraction = n.split('.')