CTET Class I to V 23 Dec 2021 Paper

On the map of India, the distance between Delhi to Shimla is 2.5 cm, Delhi to Dehradun is 1.5 cm, the distance between Shimla to Mumbai is 4.5 cm, Shimla to Dehradun is 2 cm. 1 cm on the map shows 250 km on the ground, Hiya has to travel Dehradun to Mumbai via Shimla, How much distance she will have to travel?