500*182*2 12*21*25 123*65*8 8*309*50 4*429*25 16*23*125 решите

$500\cdot182\cdot2=182\cdot(2\cdot500)=182\cdot1000=182000$

$12\cdot21\cdot25=21\cdot(12\cdot25)=21\cdot300=6300$

$123\cdot65\cdot8=123\cdot(65\cdot8)=123\cdot520=63960$

$8\cdot309\cdot50=309\cdot(8\cdot50)=309\cdot400=123600$

$4\cdot429\cdot25=429\cdot(4\cdot25)=429\cdot100=42900$

$16\cdot23\cdot125=23\cdot(16\cdot125)=23\cdot2000=46000$