Then, on your device, open that e-mail and download that attachment. If that doesn't work for some reason, or you're working from your PC, download the APK and email it to yourself as an attachment.Free, easy to use, intuitive and functional, fractions are made easy King Calculator v2.2.3 (Premium unlocked) APK King Calculator is part of 'Google in Education', schools in the United States use it as an educational tool.