Как решить удобным способом?25х38х45х17х425х3635x188х45х25240х25

25х38х4 = (25•4) • 38 = 100 • 38 • 3800

5х17х4 = (5•4) • 17 = 20 • 17 = 340

25х36 = 5•5 • 6•6 =
= (5•6) • (5•6) + 30•30 = 900

35x18 = 5•7 + 3•6 = (5•6) • (7•3) =
= 30 • 21 = 630

8х45х25 = 4•2• 45 • 25 =
= (4•25) • (2•45) = 100 • 90 = 9000

240х25 = 40 • 6 • 25 = (40•25) • 6 =
= 1000 • 6 = 6000