Hola, quería saber cual es el codigo para crear una caja informativa donde te vaya poniendo el resultado en euros de la suma de los productos que se van añadiendo en este formulario en tiempo real.
gracias
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<p align="center" style="word-spacing: -2px; margin-top: -2px; margin-bottom: -2px"><span style="font-size:48px;"><font face="Monotype Corsiva">Bebidas</font></span></p>
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<td width="252"><b><font face="Tempus Sans ITC">AGUA</font></b></td>
<td align="center" width="64"><b><font face="Tempus Sans ITC">1,00</font></b></td>
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<p align="center"><font face="Tempus Sans ITC"><select name="AGUA" size="1" style="font-weight: 700""><option>____</option><option>1</option><option>2</option><option>3</option><option>4</option><option>5</option></select></font></p>
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<td width="252"><b><font face="Tempus Sans ITC">AGUA 1 LITRO</font></b></td>
<td align="center" width="64"><b><font face="Tempus Sans ITC">2,00</font></b></td>
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<p align="center"><font face="Tempus Sans ITC"><select name="AGUA_1_litro" size="1" style="font-weight: 700"><option>____</option><option>1</option><option>2</option><option>3</option><option>4</option><option>5</option></select></font></p>
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<td width="252"><b><font face="Tempus Sans ITC">COCA COLA (LATA)</font></b></td>
<td align="center" width="64"><b><font face="Tempus Sans ITC">1,00</font></b></td>
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<p align="center"><font face="Tempus Sans ITC"><select name="COCA_COLA" size="1" style="font-weight: 700"><option>____</option><option>1</option><option>2</option><option>3</option><option>4</option><option>5</option></select></font></p>
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<td width="252"><b><font face="Tempus Sans ITC">COCA COLA ZERO (LATA)</font></b></td>
<td align="center" width="64"><b><font face="Tempus Sans ITC">1,00</font></b></td>
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<p align="center"><font face="Tempus Sans ITC"><select name="COCA_COLA_ZERO" size="1" style="font-weight: 700"><option>____</option><option>1</option><option>2</option><option>3</option><option>4</option><option>5</option></select></font></p>
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