They didn't calculate a fixed number. They adjust the numbers depending on what allows them to throw enough bombs that day. And if they get to distract or don't face political backlash over it, which we saw in the past months getting especially worse, with how the US, UK and Germany to maybe throw some words, but otherwise go hellbent on full support of their crimes.
For all matters of reason the value of a Palestinian life to the Zionazis is 0. Heck we see them murdering women and children out of boredom. We see them counting how many women and children they murdered and bragging about it on Tiktok.