Problem: Add spaces: HewaschairmanoftheMathematicsDepartmentatHarvardfrom1981to1984andMacArthurFellowfrom1987to1992.

Spaces added: He was chairman of the Mathematics Department at Harvard from 1981 to 1984 and MacArthur Fellow from 1987 to 1992.

Problem: Add spaces: Proceedbyclicking“Continue”.fourplus3=

Spaces added: Proceed by clicking “Continue”. four plus 3 =

Problem: Add spaces: Helpcommunitiespositivelysupportbreastfeedinginpublicplaces

Spaces added: Help communities positively support breastfeeding in public places

Problem: Add spaces: FromCanondigitalcamerastoprofessionalSonyDSLRsoranyotherrecordingmedia,youpossiblypreferSDcard,asyourmultimediaflashstorage.

Spaces added:
From Canon digital cameras to professional Sony DSLRs or any other recording media, you possibly prefer SD card, as your multimedia flash storage.