Anglais : Commémoration et calcul du temps de mémoire

Read the following short text about a war memorial in London: 'The Cenotaph in Whitehall is a national memorial site. It represents the memory of the soldiers who died during the First World War. Every year, on Remembrance Sunday, the nation observes a silence of $2$ minutes at $11:00$ AM to honor the fallen. The total duration of this symbolic silence is $t = 120$ seconds.' Based on the text, answer the following question: If a student wants to calculate the total time spent in silence over $n = 5$ years of commemoration, what formula should they use and what is the final value in seconds?