m(H2O)=1000*1=1000(g)
m(盐酸溶液)=1000/(1-37%)=1587.3(g)
m(HCl)=1587.3-1000=587.3(g)
ρ(HCl)=36.5/24.45=1.49(g/L)
V(HCl)=587.3/1.49=394.2(L)