How To Convert %w/v Into %w/w With Know Density How Do You Convert A % W/v Or % W/w Solution Into Molar?

How do you convert a % w/v or % w/w solution into Molar? - how to convert %w/v into %w/w with know density

For example, if I weigh 58,442 NaCl in 1 liter of solution I 1 molar, which is also a 5.8422% w / v Well, why, if you need 37% (w / w) HCl solution to take into account the density of the solution ?