Alright, let's work through 18671181 times 87381674 step by step
18671181 × 87381674 = 87381674 × (18671181)
+ 87381674 × 1 that is equal 87381674
+ 87381674 × 80 which equals 6990533920
+ 87381674 × 100 that is equal 8738167400
+ 87381674 × 1000 giving us 87381674000
+ 87381674 × 70000 what gives us 6116717180000
+ 87381674 × 600000 that is equal 52429004400000
+ 87381674 × 8000000 which equals 699053392000000
+ 87381674 × 10000000 what gives us 873816740000000

= 1631519051336994
