Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> e93bf2b091304a9fd7c0e5924227818c5d433322dc7b3c61d1e2af43f6bbae2e:13:8
   |
13 |         let f1 = fee * I1B2sqr / scale * I2B1sqr / scale - I1B2;
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^