$ curl cheat.sh/

# dc
# 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>.

# Start an interactive session:
dc

# Execute a script:
dc path/to/script.dc

# Calculate an expression with the specified scale:
dc --expression='10 k 5 3 / p'

# Calculate 4 times 5 (4 5 *), subtract 17 (17 -), and [p]rint the output:
dc --expression='4 5 * 17 - p'

# Set number of decimal places to 7 (7 k), calculate 5 divided by -3 (5 _3 /) and [p]rint:
dc --expression='7 k 5 _3 / p'

# 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:
dc --expression='100 k 5 v 1 + 2 / p'

$

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