Prove that it will be "massive". How much? The numbers are important here. I am willing to accept that some prices will go up. But I don't think it's "massive"

Prove that it will be "massive". How much? The numbers are important here. I am willing to accept that some prices will go up. But I don't think it's "massive" and some are claiming that there's runaway inflation in this scenario. There isn't. We've also had a deflationary enviroment for quite some time. We need inflation.