No problem, we've got 64040860 and 70971359 to multiply
64040860 × 70971359 = 70971359 × (64040860)
+ 70971359 × 0 resulting in 0
+ 70971359 × 60 what gives us 4258281540
+ 70971359 × 800 which equals 56777087200
+ 70971359 × 0000 which equals 0
+ 70971359 × 40000 producing 2838854360000
+ 70971359 × 000000 that equals 0
+ 70971359 × 4000000 yielding 283885436000000
+ 70971359 × 60000000 producing 4258281540000000

= 4545066865728740
