>>1522801ya walking up hill can be a bit hard on the calves and ankles over time
so a little bit of unit conversion
my favorite hill has an average of about 3.59 Degrees slope
Via nelson street
54.8 meters Rise by 643 meters Length
4.87 Degrees
via grove Ave at its steepest point
32.9 meters Rise by 563 meters Length
3.34 Degrees
Unfortunately most people talking about hills dont even consider such 1/10 grades a threat
https://www.inchcalculator.com/elevation-grade-calculator/here is a sight that suggests different gear inches for different grades
http://sdellington.us/gearing/gearing.htmljust running the numbers on the Blix Vika+ bike you have in your first post
52/ - chain ring
14/28 - freewheel
20"x1.7" wheels
36 to 72 gear inches
it appears to have
Acera RD M360 SGS (rear derailleur) can handle 34 tooth
MF-TZ500-7 14-28 (freewheel)
I would replace the freewheel (if indeed it has one) with SunRace MFM4S 13-34 7 speed
http://www.sunrace.com/en/products/detail/mfm4sand change the chaining to 42 tooth (you may need to shorten the chain length for this to work
to give 24 to 63 gear inches
you can work out some of the gears here
https://www.berkshiresports.org/bicycle-gear-ratio-comparison-calculator/and if you want really low gears you could try for a 16 inch wheeled bike
