as of december 312017 what was the ratio of square footage in san francisco bay area ca singapore
Important information:
table_1: location the san diego ca of approximate square feet is 1218000 ; the san diego ca of operation is r&d manufacturing warehouse distribution and administrative ; the san diego ca of leaseexpiration dates is 2018 2013 2031 ;
table_2: location the san francisco bay area ca of approximate square feet is 616000 ; the san francisco bay area ca of operation is r&d manufacturing warehouse and administrative ; the san francisco bay area ca of leaseexpiration dates is 2018 2013 2025 ;
table_3: location the singapore of approximate square feet is 395000 ; the singapore of operation is r&d manufacturing warehouse distribution and administrative ; the singapore of leaseexpiration dates is 2018 2013 2025 ;
Reasoning Steps:
Step: divide2-1(616000, 395000) = 1.6
Program:
divide(616000, 395000)
Program (Nested):
divide(616000, 395000)

Please answer the following financial question based on the context provided. Make sure to give the answer in raw number, not in percentage and without any units. If the question asks for percentage the value should be less than 1
Context:
table of contents item 2 . properties . the following table summarizes the facilities we lease as of december 31 , 2017 , including the location and size of each principal facility , and their designated use . we believe our facilities are adequate for our current and near-term needs , and will be able to locate additional facilities as needed . location approximate square feet operation expiration dates .
Table
location                  | approximate square feet | operation                                                   | leaseexpiration dates
san diego ca              | 1218000                 | r&d manufacturing warehouse distribution and administrative | 2018 2013 2031       
san francisco bay area ca | 616000                  | r&d manufacturing warehouse and administrative              | 2018 2013 2025       
singapore                 | 395000                  | r&d manufacturing warehouse distribution and administrative | 2018 2013 2025       
cambridge united kingdom* | 92000                   | r&d manufacturing and administrative                        | 2020 2013 2024       
eindhoven the netherlands | 42000                   | distribution and administrative                             | 2020                 
madison wi*               | 73000                   | r&d manufacturing warehouse distribution and administrative | 2018 2013 2019       
other*                    | 78000                   | administrative                                              | 2018 2013 2022       
________________ *excludes approximately 309000 square feet for which the leases do not commence until 2018 and beyond . item 3 . legal proceedings . we are involved in various lawsuits and claims arising in the ordinary course of business , including actions with respect to intellectual property , employment , and contractual matters . in connection with these matters , we assess , on a regular basis , the probability and range of possible loss based on the developments in these matters . a liability is recorded in the financial statements if it is believed to be probable that a loss has been incurred and the amount of the loss can be reasonably estimated . because litigation is inherently unpredictable and unfavorable results could occur , assessing contingencies is highly subjective and requires judgments about future events . we regularly review outstanding legal matters to determine the adequacy of the liabilities accrued and related disclosures . the amount of ultimate loss may differ from these estimates . each matter presents its own unique circumstances , and prior litigation does not necessarily provide a reliable basis on which to predict the outcome , or range of outcomes , in any individual proceeding . because of the uncertainties related to the occurrence , amount , and range of loss on any pending litigation or claim , we are currently unable to predict their ultimate outcome , and , with respect to any pending litigation or claim where no liability has been accrued , to make a meaningful estimate of the reasonably possible loss or range of loss that could result from an unfavorable outcome . in the event opposing litigants in outstanding litigations or claims ultimately succeed at trial and any subsequent appeals on their claims , any potential loss or charges in excess of any established accruals , individually or in the aggregate , could have a material adverse effect on our business , financial condition , results of operations , and/or cash flows in the period in which the unfavorable outcome occurs or becomes probable , and potentially in future periods . item 4 . mine safety disclosures . not applicable. .
Question: 
as of december 312017 what was the ratio of square footage in san francisco bay area ca singapore
Important information:
table_1: location the san diego ca of approximate square feet is 1218000 ; the san diego ca of operation is r&d manufacturing warehouse distribution and administrative ; the san diego ca of leaseexpiration dates is 2018 2013 2031 ;
table_2: location the san francisco bay area ca of approximate square feet is 616000 ; the san francisco bay area ca of operation is r&d manufacturing warehouse and administrative ; the san francisco bay area ca of leaseexpiration dates is 2018 2013 2025 ;
table_3: location the singapore of approximate square feet is 395000 ; the singapore of operation is r&d manufacturing warehouse distribution and administrative ; the singapore of leaseexpiration dates is 2018 2013 2025 ;
Reasoning Steps:
Step: divide2-1(616000, 395000) = 1.6
Program:
divide(616000, 395000)
Program (Nested):
divide(616000, 395000)
