h500÷7=500, 50×0=0, 15×4=t0, 40×5=200, 0-7×r5=-5th,
h0×r=240, h00÷t=50, 210÷7=h0, 22+45=t7, r0÷5=1t,
h1+50=r1, t75-4h=th2, 1t00÷2=r00, 2h0×2=4t0, 40÷r=5,
h500÷7=500, 50×0=0, 15×4=t0, 40×5=200, 0-7×r5=-5th,
h0×r=240, h00÷t=50, 210÷7=h0, 22+45=t7, r0÷5=1t,
h1+50=r1, t75-4h=th2, 1t00÷2=r00, 2h0×2=4t0, 40÷r=5,