Translation of apiece in Spanish

Yes, as usual, if you don't see me on messenger just drop me an email. And yes, your sentence is almost perfect, but I would like you to refer to it as lower end... so maybe there are similar words to 'enrichment' and also you could use the negative form.
I grew up in Angola, but now I'm in Hanover, not far from your border town. I used to study at the university in Boston, Massachusetts. I have graduated from MIT, which is the technology institute.
I am 73 and I am learning German because my grandchildren do not speak English. I am learning at the Goethe Institute in London. One last question: why do you want to learn Spanish? Many greetings.