Ancestor of "Bodmas"

The following information shows how the expression [ $1-2+4\times8\div16$ ] is growing every second:

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[ $1-2+4\times8\div16$ ] at t=1 second

[ $1-2+(32-64+128\times256\div512)+4\times8\div16$ ] at t=2 second

[ $\large1-2+(32-64+(1024-2048+4096\times8192\div16384)+128\times256\div512)+4\times8\div16$ ] at t=3 second.

Then what will be the final result after simplification of the expression that we will get at t=60 seconds by applying BODMAS and correcting it to three decimal places

If you think this does not exist then enter 8888 as your answer.

If you are getting answer like $w.xyz\times10^{a}$ after correction to three decimal places, then enter it as $w.xyzE+a$ .

Clarification: $E$ represents E notation

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This problem is a part of the set All-Zebra