Alright, let's work through 86947532 times 84039609 step by step
86947532 × 84039609 = 84039609 × (86947532)
+ 84039609 × 2 that equals 168079218
+ 84039609 × 30 that equals 2521188270
+ 84039609 × 500 which equals 42019804500
+ 84039609 × 7000 resulting in 588277263000
+ 84039609 × 40000 that equals 3361584360000
+ 84039609 × 900000 which equals 75635648100000
+ 84039609 × 6000000 that equals 504237654000000
+ 84039609 × 80000000 which equals 6723168720000000

= 7307036592794988
