Alright, let's work through 75380515 times 27638787 step by step
75380515 × 27638787 = 27638787 × (75380515)
+ 27638787 × 5 that equals 138193935
+ 27638787 × 10 resulting in 276387870
+ 27638787 × 500 yielding 13819393500
+ 27638787 × 0000 giving us 0
+ 27638787 × 80000 yielding 2211102960000
+ 27638787 × 300000 that equals 8291636100000
+ 27638787 × 5000000 which equals 138193935000000
+ 27638787 × 70000000 which equals 1934715090000000

= 2083425998035305
