Calculate the golden ratio, phi: set number of decimal places to 100 (100 k), square root of 5 (5 v) plus 1 (1 +), divided by 2 (2 /), and [p]rint result
An arbitrary precision calculator. Uses reverse polish notation (RPN).
See also: `bc`.
More information: <https://www.gnu.org/software/bc/manual/dc-1.05/html_mono/dc.html>.