Alright, let's work through 78424785 times 72548219 step by step
78424785 × 72548219 = 72548219 × (78424785)
+ 72548219 × 5 resulting in 362741095
+ 72548219 × 80 producing 5803857520
+ 72548219 × 700 that equals 50783753300
+ 72548219 × 4000 that results in 290192876000
+ 72548219 × 20000 that is equal 1450964380000
+ 72548219 × 400000 that is equal 29019287600000
+ 72548219 × 8000000 giving us 580385752000000
+ 72548219 × 70000000 producing 5078375330000000

= 5689578477207915
