RT @mrchadburn: Compound formula board work https://t.co/6pSV2js1gd - The Calculator Guide from Twitter

Compound formula board work http://pic.twitter.com/6pSV2js1gd

— mrchadburn (@mrchadburn) September 22, 2017

from Twitter https://twitter.com/GuideCalculator

September 23, 2017 at 01:57PM
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