What is the value of $$\left[1000 + 300 - \{500 \div 5 + 100\} \times 4\right]$$?
=Â $$\left[1000 + 300 - \{500 \div 5 + 100\} \times 4\right]$$
= $$\left[1000 + 300 - \{100 + 100\} \times 4\right]$$
= $$\left[1000 + 300 - \{200\} \times 4\right]$$
= $$[1000 + 300 - 800]$$
= $$[1300 - 800]$$
= 500
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