2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/49710We review recent measurements as well as phenomenological background of the semileptonic branching fraction of $b$ hadrons and number of charm produced per decay of $b$ hadrons.2-column 9 pages, uses JHEP package, presented at the 8th heavy flavor conference, South HumptonHigh Energy Physics - Phenomenologytext