Alright, let's work through 42837531 times 87261897 step by step
42837531 × 87261897 = 87261897 × (42837531)
+ 87261897 × 1 resulting in 87261897
+ 87261897 × 30 giving us 2617856910
+ 87261897 × 500 giving us 43630948500
+ 87261897 × 7000 giving us 610833279000
+ 87261897 × 30000 that results in 2617856910000
+ 87261897 × 800000 that results in 69809517600000
+ 87261897 × 2000000 resulting in 174523794000000
+ 87261897 × 40000000 that results in 3490475880000000

= 3738084217856307
