Can someone help me on the tax rate

[Siqi C.]

I am trying to get my head around the tax rate. This website is very useful

http://myplace.cuyahogacounty.us/

But I can't get around the numbers I see there. For a property in Shaker Heights city, the tax rate is 4.01%, so for a property of $77,300 total value, the tax should be 3100$ per year. But when I look at the detail bill here, I can't understand where "Gross Tax" comes from, also what is "Less 920 Reduction" ? I can't find much info on it as well.