Alright, let's work through 42253806 times 42302618 step by step
42253806 × 42302618 = 42302618 × (42253806)
+ 42302618 × 6 what gives us 253815708
+ 42302618 × 00 producing 0
+ 42302618 × 800 producing 33842094400
+ 42302618 × 3000 what gives us 126907854000
+ 42302618 × 50000 that is equal 2115130900000
+ 42302618 × 200000 that is equal 8460523600000
+ 42302618 × 2000000 that equals 84605236000000
+ 42302618 × 40000000 giving us 1692104720000000

= 1787446614264108
