In the form learnt at school:
eg
2 5 1
* 4 2
-----
ANSWER
Thanks,
I don't know the first person but the first country to do it was India:
https://youtu.be/ojpyvpFLN6M?t=3m01s
The guy discussing it (VS Ramachandran) is fascinating, he has made many amazing brain discoveries, one of them was synesthesia.
Also are you just going to leave us hanging on the answer to 251*42? jk :)