Please help solve the problem related to the complex irrigation!

In the composite pipeline $($parallel pipeline$)$ as shown in Figure

H$=8\mathrm{.}7$m$,$ l$1=3,000$m$,$ l$2=730$m$,$ l$3=600$m$,$ l$4=300$m$,$

d$1=0\mathrm{.}3$m$,$ d$2=0\mathrm{.}2$m$,$ d$3=0\mathrm{.}25$m$,$ d$4=0\mathrm{.}25$m

Find the flow rate and flow rate of each irrigation channel.

$($However$,$ only the number of friction losses is considered, and the friction coefficients of the pipe are all $0\mathrm{.}02)$