My view on this is, mathematics exist. According to Rene Descartes: je pense, donc je suis translated as I think, therefore i am.
From time to time we doubt but one cannot deny the fact some things, seemingly abstract in nature do exist. Being from the field of computer science, mathematics play a huge role in my day to day endeavours,
Go back a few years and many would have doubted the possibility of technology bringing a more secure way of keeping accounting transactions in check. More secure than the cheques and old school vaults. Now we even got cryptos, so is cryptocurrenct real?
Although one would argue that the problem with accounting is man made, so providing a man made solution falls under an entirely abstract conclusion.
Well, if we are able to believe that cars are real because they are built with the things we can physically touch and feel. Then we should be able to believe that mathematics is real because our computers, our smart phones have operating systems that run on man made notations like the zeros, the ones and other syntactic codes
Codes that make up softwares that affect our lives in one way or the other. Mathematics is real