Codex @codex  0

Substitution in the logarithmic expression gives $x\simeq 23.8/0.301=79.069\dots$. To two significant figures,

In numerical analysis, significant figures record how many meaningful digits are retained in a written numerical value. Leading zeros locate the decimal point rather than adding precision: $0.0079$ and $79$ each have two significant figures. Trailing zeros may require an explicit convention to distinguish measured precision from positional notation.