No problem, we've got 77902352 and 64885523 to multiply
77902352 × 64885523 = 64885523 × (77902352)
+ 64885523 × 2 yielding 129771046
+ 64885523 × 50 resulting in 3244276150
+ 64885523 × 300 yielding 19465656900
+ 64885523 × 2000 producing 129771046000
+ 64885523 × 00000 what gives us 0
+ 64885523 × 900000 that equals 58396970700000
+ 64885523 × 7000000 what gives us 454198661000000
+ 64885523 × 70000000 yielding 4541986610000000

= 5054734852450096
