Alright, let's work through 75378867 times 69801390 step by step
75378867 × 69801390 = 69801390 × (75378867)
+ 69801390 × 7 resulting in 488609730
+ 69801390 × 60 giving us 4188083400
+ 69801390 × 800 yielding 55841112000
+ 69801390 × 8000 yielding 558411120000
+ 69801390 × 70000 what gives us 4886097300000
+ 69801390 × 300000 yielding 20940417000000
+ 69801390 × 5000000 which equals 349006950000000
+ 69801390 × 70000000 that is equal 4886097300000000

= 5261549693225130
