1+2=3.100000000=?

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1+2=3.100000000=?1+2=3.100000000=?1+2=3.100000000=?1+2=3.100000000=(1+100000000)×(100000000÷2)=10000

1+2=3.100000000=?
1+2=3.100000000=?

1+2=3.100000000=?
1+2=3.100000000
=(1+100000000)×(100000000÷2)
=100000001×20000000
=2000000020000000

(1+100000000)*100000000/2