I need to convert Lambert conformal conic projection to lat/long coordinates. My coordinate in Lambert is like this: (7678236.84856942, 1280719.40571689) and I expect to have a coordinate like Google numbers (something near to this: 45.4330538,-75.722731 for those numbers).

This page explains "Lambert conformal conic" which used with more details: https://www12.statcan.gc.ca/census-recensement/2016/ref/dict/geo016-eng.cfm

On the Wikipedia page of LCC there is a transformation formula but I don't know what should be my parameters.