Below is an instruction that describes a task. Write a response that appropriately completes the request in English. Please answer in English.

### Instruction:
Jose had 400 tabs opened up in his windows browser. After about one hour of browsing, he closed 1/4 of the tabs to allows easy browsing. He read some news from different pages, then closed 2/5 of the remaining tabs. If he closed half of the remaining tabs after further analyzing some pages, how many windows tabs did he have remaining open?

### Response:
When he closed 1/4 of the tabs, he closed 1/4*400 = <<400*1/4=100>>100 tabs.
He still had 400-100 = <<400-100=300>>300 tabs opened after the first close.
After reading some news from different pages, he closed 2/5 of the remaining tabs, a total of 2/5*300 = <<2/5*300=120>>120 pages.
He still had 300-120 = <<300-120=180>>180 tabs opened.
If he closed half of the remaining tabs after further analyzing some pages, he closed a total of 1/2*180 = <<90=90>>90 pages.
The total number of windows tabs that he had remaining opened is 180-90 = <<180-90=90>>90
#### 90