r</span><span class="o">.</span><span class="n">multiply</span><span class="p" data-group-id="3725611105-8">(</span><span class="n">b</span><span class="p">,</span><span class="w"> </span><span class="nc">Vector</span><span class="o">.</span><span class="n">dot</span><span class="p" data-group-id="3725611105-9">(</span><span class="n">a</span><span class="p">,</span><span class="w"> </span><span class="n">c</span><span class="p" data-group-id="3725611105-9">)</span><span class="p" data-group-id="3725611105-