What Are the Arabic Numbers in the West?

In western europe were s at roman numerals until aisance times. There was a pope who tried to introduce them in the tenth century into europe. They hated zero, for instance. And so he got from africa some knowledge of these arabic numbers and went back to italy,. became pope and tried to spread this knowledge. But people just thought it was black magic, that he could actually add numbers together and do division. So they labelled him as a sorcerer. This dogged him throughout his papacy. I find that absolutely amazing.