$$((7x)2+(2x)5+(5x)3+9)+((14x)3+(4x)6+(10x)4+(18x))$$
$163x+9$
$$14x+2x\times 5+5x\times 3+9+14x\times 3+4x\times 6+10x\times 4+18x$$
$$14x+10x+5x\times 3+9+14x\times 3+4x\times 6+10x\times 4+18x$$
$$24x+5x\times 3+9+14x\times 3+4x\times 6+10x\times 4+18x$$
$$24x+15x+9+14x\times 3+4x\times 6+10x\times 4+18x$$
$$39x+9+14x\times 3+4x\times 6+10x\times 4+18x$$
$$39x+9+42x+4x\times 6+10x\times 4+18x$$
$$81x+9+4x\times 6+10x\times 4+18x$$
$$81x+9+24x+10x\times 4+18x$$
$$105x+9+10x\times 4+18x$$
$$105x+9+40x+18x$$
$$145x+9+18x$$
$$163x+9$$
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$163$
$$\frac{\mathrm{d}}{\mathrm{d}x}(14x+2x\times 5+5x\times 3+9+14x\times 3+4x\times 6+10x\times 4+18x)$$
$$\frac{\mathrm{d}}{\mathrm{d}x}(14x+10x+5x\times 3+9+14x\times 3+4x\times 6+10x\times 4+18x)$$
$$\frac{\mathrm{d}}{\mathrm{d}x}(24x+5x\times 3+9+14x\times 3+4x\times 6+10x\times 4+18x)$$
$$\frac{\mathrm{d}}{\mathrm{d}x}(24x+15x+9+14x\times 3+4x\times 6+10x\times 4+18x)$$
$$\frac{\mathrm{d}}{\mathrm{d}x}(39x+9+14x\times 3+4x\times 6+10x\times 4+18x)$$
$$\frac{\mathrm{d}}{\mathrm{d}x}(39x+9+42x+4x\times 6+10x\times 4+18x)$$
$$\frac{\mathrm{d}}{\mathrm{d}x}(81x+9+4x\times 6+10x\times 4+18x)$$
$$\frac{\mathrm{d}}{\mathrm{d}x}(81x+9+24x+10x\times 4+18x)$$
$$\frac{\mathrm{d}}{\mathrm{d}x}(105x+9+10x\times 4+18x)$$
$$\frac{\mathrm{d}}{\mathrm{d}x}(105x+9+40x+18x)$$
$$\frac{\mathrm{d}}{\mathrm{d}x}(145x+9+18x)$$
$$\frac{\mathrm{d}}{\mathrm{d}x}(163x+9)$$
$$163x^{1-1}$$
$$163x^{0}$$
$$163\times 1$$
$$163$$
