HOW MUCH DID THE MEARAS HAMACHPEILA COST IN TODAYS SILVER - I ASKED CHATGPT

 MY QUESTION

how much did the mearas hamechpaila cost in todays silver?

 The Gemoro in Bechoros 50a says that the Shekelim Avraham gave to Efron were Kantarin. (400 Kantarin) The Sefer Midos Veshiurei Torah says

 1 Kantor = 42.5 Kg. 1 Kantor = 42,5 kg. =. X 400 = 17,000 kg. 1kg. = 35.273 oz

Here is the answer : 

Your starting assumptions

• You cite that according to the Sefer Midos Veshiurei Torah: 1 Kantor = 42.5 kg.

• And 400 Kantarin (plural of Kantor) were given.
  ⇒ So: 42.5 kg × 400 = 17,000 kg of metal.

• You note 1 kg = 35.273 oz (avoirdupois) — though for precious metals we normally use troy-ounces (1 kg ≈ 32.1507 troy-oz).
  But using your 35.273 oz per kg (which corresponds to avoirdupois ounces) gives:
  17,000 kg × 35.273 oz/kg ≈ 600,000 oz of silver-weight.

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Modern silver price

• The spot price of silver today is about US $52.60 per troy ounce. APMEX+1
  If one used the “600,000 oz” figure above, then:

• 
  600,000 oz × US$52.60/oz ≈ US$31.56 million.