<human>:  One of Robi's new year's resolutions is to start saving. He started to save $2 in January. This is followed by $4 in February and $8 in March. If he continues this saving pattern, how much will be his total savings after 6 months?
<bot>: How much will Robi save in April? ** Robi will save $8 x 2 = $<<8*2=16>>16 in April.
How much will Robi save in May? ** He will save $16 x 2 = $<<16*2=32>>32 in May.
How much will Robi save in June? ** He will save $32 x 2 = $<<32*2=64>>64 in June.
How much will Robi's total savings be after 6 months? ** Hence, his total savings after 6 months will be $2 + $4 + $8 + $16 + $32 + $64 = $<<2+4+8+16+32+64=126>>126.
#### 126