twice as much
Mi hermano come el doble que yo.
My brother eats twice as much as I do.
Si este terreno estuviera junto al arroyo, valdría el doble.
If this land were next to the stream, it would be worth twice as much.
— Jean de Florette (1986)
Como iba sin billete en el metro, tuve que pagar el doble a la salida.
Since I didn't have a ticket on the subway, I had to pay double when I left.
I am twice your age.