Below is an instruction that describes a task. Write a response that appropriately completes the request in Swahili. Please answer in Swahili.

### Instruction:
Elsa started the day with 40 marbles.  At breakfast, she lost 3 marbles while playing.  At lunchtime, she gave her best friend Susie 5 marbles.  In the afternoon, Elsa's mom bought her a new bag with 12 marbles.  Susie came back and gave Elsa twice as many marbles as she received at lunch.  How many marbles did Elsa end the day with?

### Response:
 Elsa alikuwa na mabulinge 40 - 3 - 5 = <<40-3-5=32>>32.
Baada ya mama yake kumnunulia mfuko mpya, Elsa alikuwa na mabulinge 32 + 12 = <<32+12=44>>44.
Wakati wa chakula cha jioni, Susie alimpa Elsa mabulinge 2 * 5 = <<2*5=10>>10.
Elsa alimaliza siku na mabulinge 44 + 10 = <<44+10=54>>54.