Alright, let's work through 77916248 times 45650659 step by step
77916248 × 45650659 = 45650659 × (77916248)
+ 45650659 × 8 what gives us 365205272
+ 45650659 × 40 yielding 1826026360
+ 45650659 × 200 what gives us 9130131800
+ 45650659 × 6000 resulting in 273903954000
+ 45650659 × 10000 what gives us 456506590000
+ 45650659 × 900000 that results in 41085593100000
+ 45650659 × 7000000 yielding 319554613000000
+ 45650659 × 70000000 yielding 3195546130000000

= 3556928068007432
