$$(5 \sqrt{ 3 } - \sqrt{ 2 } )(6 \sqrt{ 3 } -2 \sqrt{ 5 }$$
$2\left(\sqrt{10}+45-3\sqrt{6}-5\sqrt{15}\right)\approx 42.897783402$
$$30\left(\sqrt{3}\right)^{2}-10\sqrt{3}\sqrt{5}-6\sqrt{3}\sqrt{2}+2\sqrt{2}\sqrt{5}$$
$$30\times 3-10\sqrt{3}\sqrt{5}-6\sqrt{3}\sqrt{2}+2\sqrt{2}\sqrt{5}$$
$$90-10\sqrt{3}\sqrt{5}-6\sqrt{3}\sqrt{2}+2\sqrt{2}\sqrt{5}$$
$$90-10\sqrt{15}-6\sqrt{3}\sqrt{2}+2\sqrt{2}\sqrt{5}$$
$$90-10\sqrt{15}-6\sqrt{6}+2\sqrt{2}\sqrt{5}$$
$$90-10\sqrt{15}-6\sqrt{6}+2\sqrt{10}$$
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$2 {(\sqrt{10} + 45 - 3 \sqrt{6} - 5 \sqrt{15})} = 42.897783402$
