Answer:
7650
Step-by-step explanation:
6+12+18+24+30+36+42+48+54+60+66+72+78+84+90+96+102+108+114+120+126+132+138+144+150+156+162+168+174+180+186+192+198+204+210+216+222+228+234+240+246+252+258+264+270+276+282+288+294+300
