1) I can't tell what it is you have written. Is that or or something else?
2) If you intended the former, multiplication would not do the job.
3) If you intended the latter, multiplication would not do the job.
4) If you intended either, how did the "3/8" manage to sit there, so taciturn in its position?
5) This sort of error must raise questions why you are dabbling in differential equations. Please review some elementary algebra. It will save you if it is solid.