calc 2.12.7.2-4 (riscv64 binary) in ubuntu hirsute

 Calc is an arbitrary precision arithmetic system that uses a C-like
 language. Calc is useful as a calculator, an algorithm prototyper and as a
 mathematical research tool. More importantly, calc provides one with a
 machine independent means of computation. Calc comes with a rich set of
 builtin mathematical and programmatic functions.
 .
 Calc is built on top of the library libcalc that represents numeric values
 as fractions reduced to their lowest terms. This library can also be used
 to add arbitrary precision capabilities to your own programs and is
 available in the Debian package `calc-dev'.
 .
 Previously, this package was named `apcalc' in Debian due to a name
 collision. However, the previous `calc' Debian package vanished long ago,
 so `apcalc' was renamed back to `calc' to match the upstream name.