$a)$

$0,6\cdot x=372$

$x=372:0,6=3720:6=\left(3600+120\right):6=600+20=620$

 

 

$b)$

$0,12\cdot x=11,88$

$x=11,88:0,12=1188:12=\left(1200-12\right):12=100-1=99$

 

 

$c)$

$0,075\cdot x=33,3$

$x=33,3:0,075=33300:75=\frac{33300}{75}=\frac{11100}{25}=444$

 

$d)$

$0,002\cdot x=10$

$x=10:0,002=10000:2=5000$