The times (in seconds) taken by $150$ athletes to run a $110 \mathrm{m}$ hurdle race are tabulated below :

Class	$13.8-14$	$14-14.2$	$14.2-14.4$	$14.4-14.6$	$14.6-14.8$	$14.8-15$
Frequency	$2$	$4$	$5$	$71$	$48$	$20$

The number of athletes who completed the race in less than $14.6 \mathrm{m}$ is