Please help with this question
Q.16. A multi range voltmeter can be constructed by using a galvanometer circuit as shown in the figure. We want to construct a voltmeter that can measure 2 V, 20 V and 200 V using a galvanometer of resistance 10 $\Omega$ and that produces maximum deflection for current of 1 mA. Find the value of $R_1, R_2 and R_3$ that have to be used.