$$F= \sqrt[ 4 ]{ ((2 \times 12)+4)(24+4)(7 \times 4)(1+2+3+4+5+6+7) }$$
$F=28$
$$F=\sqrt[4]{\left(24+4\right)\left(24+4\right)\times 7\times 4\left(1+2+3+4+5+6+7\right)}$$
$$F=\sqrt[4]{28\left(24+4\right)\times 7\times 4\left(1+2+3+4+5+6+7\right)}$$
$$F=\sqrt[4]{28\times 28\times 7\times 4\left(1+2+3+4+5+6+7\right)}$$
$$F=\sqrt[4]{784\times 7\times 4\left(1+2+3+4+5+6+7\right)}$$
$$F=\sqrt[4]{5488\times 4\left(1+2+3+4+5+6+7\right)}$$
$$F=\sqrt[4]{21952\left(1+2+3+4+5+6+7\right)}$$
$$F=\sqrt[4]{21952\left(3+3+4+5+6+7\right)}$$
$$F=\sqrt[4]{21952\left(6+4+5+6+7\right)}$$
$$F=\sqrt[4]{21952\left(10+5+6+7\right)}$$
$$F=\sqrt[4]{21952\left(15+6+7\right)}$$
$$F=\sqrt[4]{21952\left(21+7\right)}$$
$$F=\sqrt[4]{21952\times 28}$$
$$F=\sqrt[4]{614656}$$
$$F=28$$
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$F≔28$
