Alright, let's work through 449623 times 97291672 step by step
449623 × 97291672 = 97291672 × (449623)
+ 97291672 × 3 what gives us 291875016
+ 97291672 × 20 yielding 1945833440
+ 97291672 × 600 that equals 58375003200
+ 97291672 × 9000 what gives us 875625048000
+ 97291672 × 40000 yielding 3891666880000
+ 97291672 × 400000 that is equal 38916668800000

= 43744573439656
