638*176~638*75~638
638*(176-75)
=638*101
=638*(100+1)
=63800+638-638(as mentioned at last of question)
=63800+0= 63800 which is
the answer.
=638*101
=638*(100+1)
=63800+638-638(as mentioned at last of question)
=63800+0= 63800 which is
the answer.