diff --git a/bc/bcrc b/bc/bcrc
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--- /dev/null
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@@ -0,0 +1,21 @@
+################################################################################
+# .bcrc -- configuration file for [bc](https://www.gnu.org/software/bc/)
+#                              _
+#                             | |__   ___ _ __ ___
+#                             | '_ \ / __| '__/ __|
+#                            _| |_) | (__| | | (__
+#                           (_)_.__/ \___|_|  \___|
+#
+################################################################################
+
+# scale defines how some operations use digits after the decimal point.
+# The default value of scale  is  0.
+
+scale=2
+
+# ibase and obase define the conversion base for input and output numbers.
+# The default for both input and output is base 10.
+
+ibase=10
+obase=10
+