="string">"DCC"</span> <span class="special">,</span> <span class="number">700</span><span class="special">)(</span><span class="string">"DCCC"</span> <span class="special">,</span> <span class="number">800</span><span class="special">)(</span><span class="string">"CM"</span> <span class="special">,</span> <span class="number">900</span><span class="special">)</span> <span class="special">;</span>

        <span class="identifier">tens</span><span class="special">.</span><span class="identifier">add</span>
