Cookie Clicker

I can't figure out the cursor cookie production rate. Base cookie per second (CpS) is 0.1, and the upgrades I have so far are CpS +0.1, Cps*4, and CpS +12.6 for each non-cursor object owned.

I have 140 cursors and 718 items total of everything else (grandma, farm, ..., antimatter).

The way I figure, I should be making 140*(0.2+12.6*718)*4 = 5,066,320 CpS, but I'm actually getting 1,266,664 CpS instead, which is just a little over 1/4 of my calculated number. Can anyone help me figure out what is wrong with my calculations?

Edit: Nevermind. It's funny how I figured it out just after I typed this. The *4 multiplier doesn't affect the +Cps per non-cursor objects.