I think in Japan they designed equipments/gadgets etc not to only make life easier but also so that you can have a work done even by yourself. Like milling rice, here you can just go to that coin rice mill booth [looks like an ATM booth, sorry I was not able to take picture :-( ]. Here is the picture on how to do it, maybe not so complicated at all...

just put the rice, then the money, select how clean/white you want the rice to be, wait for a while and then voila! You have your milled rice ready for cooking.
here is where you put the rice

you select the "whiteness" and put money here

and the milled rice will come out from here

it is easy and maybe all you need is a strong back so that you can carry a sack of rice on your own.
deki agari desu :-)
just put the rice, then the money, select how clean/white you want the rice to be, wait for a while and then voila! You have your milled rice ready for cooking.
here is where you put the rice
you select the "whiteness" and put money here
and the milled rice will come out from here
it is easy and maybe all you need is a strong back so that you can carry a sack of rice on your own.
deki agari desu :-)